var Vue = (function (exports) {
  'use strict';

  /**
   * Make a map and return a function for checking if a key
   * is in that map.
   * IMPORTANT: all calls of this function must be prefixed with
   * \/\*#\_\_PURE\_\_\*\/
   * So that rollup can tree-shake them if necessary.
   */
  function makeMap(str, expectsLowerCase) {
    const map = Object.create(null);
    const list = str.split(',');
    for (let i = 0; i < list.length; i++) {
      map[list[i]] = true;
    }
    return expectsLowerCase ? val => !!map[val.toLowerCase()] : val => !!map[val];
  }

  /**
   * dev only flag -> name mapping
   */
  const PatchFlagNames = {
    [1 /* TEXT */]: `TEXT`,
    [2 /* CLASS */]: `CLASS`,
    [4 /* STYLE */]: `STYLE`,
    [8 /* PROPS */]: `PROPS`,
    [16 /* FULL_PROPS */]: `FULL_PROPS`,
    [32 /* HYDRATE_EVENTS */]: `HYDRATE_EVENTS`,
    [64 /* STABLE_FRAGMENT */]: `STABLE_FRAGMENT`,
    [128 /* KEYED_FRAGMENT */]: `KEYED_FRAGMENT`,
    [256 /* UNKEYED_FRAGMENT */]: `UNKEYED_FRAGMENT`,
    [512 /* NEED_PATCH */]: `NEED_PATCH`,
    [1024 /* DYNAMIC_SLOTS */]: `DYNAMIC_SLOTS`,
    [2048 /* DEV_ROOT_FRAGMENT */]: `DEV_ROOT_FRAGMENT`,
    [-1 /* HOISTED */]: `HOISTED`,
    [-2 /* BAIL */]: `BAIL`
  };

  /**
   * Dev only
   */
  const slotFlagsText = {
    [1 /* STABLE */]: 'STABLE',
    [2 /* DYNAMIC */]: 'DYNAMIC',
    [3 /* FORWARDED */]: 'FORWARDED'
  };

  const GLOBALS_WHITE_LISTED = 'Infinity,undefined,NaN,isFinite,isNaN,parseFloat,parseInt,decodeURI,' +
    'decodeURIComponent,encodeURI,encodeURIComponent,Math,Number,Date,Array,' +
    'Object,Boolean,String,RegExp,Map,Set,JSON,Intl,BigInt';
  const isGloballyWhitelisted = /*#__PURE__*/ makeMap(GLOBALS_WHITE_LISTED);

  const range = 2;
  function generateCodeFrame(source, start = 0, end = source.length) {
    const lines = source.split(/\r?\n/);
    let count = 0;
    const res = [];
    for (let i = 0; i < lines.length; i++) {
      count += lines[i].length + 1;
      if (count >= start) {
        for (let j = i - range; j <= i + range || end > count; j++) {
          if (j < 0 || j >= lines.length)
            continue;
          const line = j + 1;
          res.push(`${line}${' '.repeat(Math.max(3 - String(line).length, 0))}|  ${lines[j]}`);
          const lineLength = lines[j].length;
          if (j === i) {
            // push underline
            const pad = start - (count - lineLength) + 1;
            const length = Math.max(1, end > count ? lineLength - pad : end - start);
            res.push(`   |  ` + ' '.repeat(pad) + '^'.repeat(length));
          }
          else if (j > i) {
            if (end > count) {
              const length = Math.max(Math.min(end - count, lineLength), 1);
              res.push(`   |  ` + '^'.repeat(length));
            }
            count += lineLength + 1;
          }
        }
        break;
      }
    }
    return res.join('\n');
  }

  /**
   * On the client we only need to offer special cases for boolean attributes that
   * have different names from their corresponding dom properties:
   * - itemscope -> N/A
   * - allowfullscreen -> allowFullscreen
   * - formnovalidate -> formNoValidate
   * - ismap -> isMap
   * - nomodule -> noModule
   * - novalidate -> noValidate
   * - readonly -> readOnly
   */
  const specialBooleanAttrs = `itemscope,allowfullscreen,formnovalidate,ismap,nomodule,novalidate,readonly`;
  const isSpecialBooleanAttr = /*#__PURE__*/ makeMap(specialBooleanAttrs);

  function normalizeStyle(value) {
    if (isArray(value)) {
      const res = {};
      for (let i = 0; i < value.length; i++) {
        const item = value[i];
        const normalized = normalizeStyle(isString(item) ? parseStringStyle(item) : item);
        if (normalized) {
          for (const key in normalized) {
            res[key] = normalized[key];
          }
        }
      }
      return res;
    }
    else if (isObject(value)) {
      return value;
    }
  }
  const listDelimiterRE = /;(?![^(]*\))/g;
  const propertyDelimiterRE = /:(.+)/;
  function parseStringStyle(cssText) {
    const ret = {};
    cssText.split(listDelimiterRE).forEach(item => {
      if (item) {
        const tmp = item.split(propertyDelimiterRE);
        tmp.length > 1 && (ret[tmp[0].trim()] = tmp[1].trim());
      }
    });
    return ret;
  }
  function normalizeClass(value) {
    let res = '';
    if (isString(value)) {
      res = value;
    }
    else if (isArray(value)) {
      for (let i = 0; i < value.length; i++) {
        const normalized = normalizeClass(value[i]);
        if (normalized) {
          res += normalized + ' ';
        }
      }
    }
    else if (isObject(value)) {
      for (const name in value) {
        if (value[name]) {
          res += name + ' ';
        }
      }
    }
    return res.trim();
  }

  // These tag configs are shared between compiler-dom and runtime-dom, so they
  // https://developer.mozilla.org/en-US/docs/Web/HTML/Element
  const HTML_TAGS = 'html,body,base,head,link,meta,style,title,address,article,aside,footer,' +
    'header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,div,dd,dl,dt,figcaption,' +
    'figure,picture,hr,img,li,main,ol,p,pre,ul,a,b,abbr,bdi,bdo,br,cite,code,' +
    'data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,s,samp,small,span,strong,sub,sup,' +
    'time,u,var,wbr,area,audio,map,track,video,embed,object,param,source,' +
    'canvas,script,noscript,del,ins,caption,col,colgroup,table,thead,tbody,td,' +
    'th,tr,button,datalist,fieldset,form,input,label,legend,meter,optgroup,' +
    'option,output,progress,select,textarea,details,dialog,menu,' +
    'summary,template,blockquote,iframe,tfoot';
  // https://developer.mozilla.org/en-US/docs/Web/SVG/Element
  const SVG_TAGS = 'svg,animate,animateMotion,animateTransform,circle,clipPath,color-profile,' +
    'defs,desc,discard,ellipse,feBlend,feColorMatrix,feComponentTransfer,' +
    'feComposite,feConvolveMatrix,feDiffuseLighting,feDisplacementMap,' +
    'feDistanceLight,feDropShadow,feFlood,feFuncA,feFuncB,feFuncG,feFuncR,' +
    'feGaussianBlur,feImage,feMerge,feMergeNode,feMorphology,feOffset,' +
    'fePointLight,feSpecularLighting,feSpotLight,feTile,feTurbulence,filter,' +
    'foreignObject,g,hatch,hatchpath,image,line,linearGradient,marker,mask,' +
    'mesh,meshgradient,meshpatch,meshrow,metadata,mpath,path,pattern,' +
    'polygon,polyline,radialGradient,rect,set,solidcolor,stop,switch,symbol,' +
    'text,textPath,title,tspan,unknown,use,view';
  const VOID_TAGS = 'area,base,br,col,embed,hr,img,input,link,meta,param,source,track,wbr';
  const isHTMLTag = /*#__PURE__*/ makeMap(HTML_TAGS);
  const isSVGTag = /*#__PURE__*/ makeMap(SVG_TAGS);
  const isVoidTag = /*#__PURE__*/ makeMap(VOID_TAGS);

  function looseCompareArrays(a, b) {
    if (a.length !== b.length)
      return false;
    let equal = true;
    for (let i = 0; equal && i < a.length; i++) {
      equal = looseEqual(a[i], b[i]);
    }
    return equal;
  }
  function looseEqual(a, b) {
    if (a === b)
      return true;
    let aValidType = isDate(a);
    let bValidType = isDate(b);
    if (aValidType || bValidType) {
      return aValidType && bValidType ? a.getTime() === b.getTime() : false;
    }
    aValidType = isArray(a);
    bValidType = isArray(b);
    if (aValidType || bValidType) {
      return aValidType && bValidType ? looseCompareArrays(a, b) : false;
    }
    aValidType = isObject(a);
    bValidType = isObject(b);
    if (aValidType || bValidType) {
      /* istanbul ignore if: this if will probably never be called */
      if (!aValidType || !bValidType) {
        return false;
      }
      const aKeysCount = Object.keys(a).length;
      const bKeysCount = Object.keys(b).length;
      if (aKeysCount !== bKeysCount) {
        return false;
      }
      for (const key in a) {
        const aHasKey = a.hasOwnProperty(key);
        const bHasKey = b.hasOwnProperty(key);
        if ((aHasKey && !bHasKey) ||
          (!aHasKey && bHasKey) ||
          !looseEqual(a[key], b[key])) {
          return false;
        }
      }
    }
    return String(a) === String(b);
  }
  function looseIndexOf(arr, val) {
    return arr.findIndex(item => looseEqual(item, val));
  }

  /**
   * For converting {{ interpolation }} values to displayed strings.
   * @private
   */
  const toDisplayString = (val) => {
    return val == null
      ? ''
      : isObject(val)
        ? JSON.stringify(val, replacer, 2)
        : String(val);
  };
  const replacer = (_key, val) => {
    if (isMap(val)) {
      return {
        [`Map(${val.size})`]: [...val.entries()].reduce((entries, [key, val]) => {
          entries[`${key} =>`] = val;
          return entries;
        }, {})
      };
    }
    else if (isSet(val)) {
      return {
        [`Set(${val.size})`]: [...val.values()]
      };
    }
    else if (isObject(val) && !isArray(val) && !isPlainObject(val)) {
      return String(val);
    }
    return val;
  };

  const EMPTY_OBJ = Object.freeze({})
  ;
  const EMPTY_ARR = Object.freeze([]) ;
  const NOOP = () => { };
  /**
   * Always return false.
   */
  const NO = () => false;
  const onRE = /^on[^a-z]/;
  const isOn = (key) => onRE.test(key);
  const isModelListener = (key) => key.startsWith('onUpdate:');
  const extend = Object.assign;
  const remove = (arr, el) => {
    const i = arr.indexOf(el);
    if (i > -1) {
      arr.splice(i, 1);
    }
  };
  const hasOwnProperty = Object.prototype.hasOwnProperty;
  const hasOwn = (val, key) => hasOwnProperty.call(val, key);
  const isArray = Array.isArray;
  const isMap = (val) => toTypeString(val) === '[object Map]';
  const isSet = (val) => toTypeString(val) === '[object Set]';
  const isDate = (val) => val instanceof Date;
  const isFunction = (val) => typeof val === 'function';
  const isString = (val) => typeof val === 'string';
  const isSymbol = (val) => typeof val === 'symbol';
  const isObject = (val) => val !== null && typeof val === 'object';
  const isPromise = (val) => {
    return isObject(val) && isFunction(val.then) && isFunction(val.catch);
  };
  const objectToString = Object.prototype.toString;
  const toTypeString = (value) => objectToString.call(value);
  const toRawType = (value) => {
    // extract "RawType" from strings like "[object RawType]"
    return toTypeString(value).slice(8, -1);
  };
  const isPlainObject = (val) => toTypeString(val) === '[object Object]';
  const isIntegerKey = (key) => isString(key) &&
    key !== 'NaN' &&
    key[0] !== '-' &&
    '' + parseInt(key, 10) === key;
  const isReservedProp = /*#__PURE__*/ makeMap(
    // the leading comma is intentional so empty string "" is also included
    ',key,ref,' +
    'onVnodeBeforeMount,onVnodeMounted,' +
    'onVnodeBeforeUpdate,onVnodeUpdated,' +
    'onVnodeBeforeUnmount,onVnodeUnmounted');
  const cacheStringFunction = (fn) => {
    const cache = Object.create(null);
    return ((str) => {
      const hit = cache[str];
      return hit || (cache[str] = fn(str));
    });
  };
  const camelizeRE = /-(\w)/g;
  /**
   * @private
   */
  const camelize = cacheStringFunction((str) => {
    return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
  });
  const hyphenateRE = /\B([A-Z])/g;
  /**
   * @private
   */
  const hyphenate = cacheStringFunction((str) => str.replace(hyphenateRE, '-$1').toLowerCase());
  /**
   * @private
   */
  const capitalize = cacheStringFunction((str) => str.charAt(0).toUpperCase() + str.slice(1));
  /**
   * @private
   */
  const toHandlerKey = cacheStringFunction((str) => (str ? `on${capitalize(str)}` : ``));
  // compare whether a value has changed, accounting for NaN.
  const hasChanged = (value, oldValue) => value !== oldValue && (value === value || oldValue === oldValue);
  const invokeArrayFns = (fns, arg) => {
    for (let i = 0; i < fns.length; i++) {
      fns[i](arg);
    }
  };
  const def = (obj, key, value) => {
    Object.defineProperty(obj, key, {
      configurable: true,
      enumerable: false,
      value
    });
  };
  const toNumber = (val) => {
    const n = parseFloat(val);
    return isNaN(n) ? val : n;
  };
  let _globalThis;
  const getGlobalThis = () => {
    return (_globalThis ||
      (_globalThis =
        typeof globalThis !== 'undefined'
          ? globalThis
          : typeof self !== 'undefined'
          ? self
          : typeof window !== 'undefined'
            ? window
            : typeof global !== 'undefined'
              ? global
              : {}));
  };

  const targetMap = new WeakMap();
  const effectStack = [];
  let activeEffect;
  const ITERATE_KEY = Symbol('iterate' );
  const MAP_KEY_ITERATE_KEY = Symbol('Map key iterate' );
  function isEffect(fn) {
    return fn && fn._isEffect === true;
  }
  function effect(fn, options = EMPTY_OBJ) {
    if (isEffect(fn)) {
      fn = fn.raw;
    }
    const effect = createReactiveEffect(fn, options);
    if (!options.lazy) {
      effect();
    }
    return effect;
  }
  function stop(effect) {
    if (effect.active) {
      cleanup(effect);
      if (effect.options.onStop) {
        effect.options.onStop();
      }
      effect.active = false;
    }
  }
  let uid = 0;
  function createReactiveEffect(fn, options) {
    const effect = function reactiveEffect() {
      if (!effect.active) {
        return options.scheduler ? undefined : fn();
      }
      if (!effectStack.includes(effect)) {
        cleanup(effect);
        try {
          enableTracking();
          effectStack.push(effect);
          activeEffect = effect;
          return fn();
        }
        finally {
          effectStack.pop();
          resetTracking();
          activeEffect = effectStack[effectStack.length - 1];
        }
      }
    };
    effect.id = uid++;
    effect.allowRecurse = !!options.allowRecurse;
    effect._isEffect = true;
    effect.active = true;
    effect.raw = fn;
    effect.deps = [];
    effect.options = options;
    return effect;
  }
  function cleanup(effect) {
    const { deps } = effect;
    if (deps.length) {
      for (let i = 0; i < deps.length; i++) {
        deps[i].delete(effect);
      }
      deps.length = 0;
    }
  }
  let shouldTrack = true;
  const trackStack = [];
  function pauseTracking() {
    trackStack.push(shouldTrack);
    shouldTrack = false;
  }
  function enableTracking() {
    trackStack.push(shouldTrack);
    shouldTrack = true;
  }
  function resetTracking() {
    const last = trackStack.pop();
    shouldTrack = last === undefined ? true : last;
  }
  function track(target, type, key) {
    if (!shouldTrack || activeEffect === undefined) {
      return;
    }
    let depsMap = targetMap.get(target);
    if (!depsMap) {
      targetMap.set(target, (depsMap = new Map()));
    }
    let dep = depsMap.get(key);
    if (!dep) {
      depsMap.set(key, (dep = new Set()));
    }
    if (!dep.has(activeEffect)) {
      dep.add(activeEffect);
      activeEffect.deps.push(dep);
      if (activeEffect.options.onTrack) {
        activeEffect.options.onTrack({
          effect: activeEffect,
          target,
          type,
          key
        });
      }
    }
  }
  function trigger(target, type, key, newValue, oldValue, oldTarget) {
    const depsMap = targetMap.get(target);
    if (!depsMap) {
      // never been tracked
      return;
    }
    const effects = new Set();
    const add = (effectsToAdd) => {
      if (effectsToAdd) {
        effectsToAdd.forEach(effect => {
          if (effect !== activeEffect || effect.allowRecurse) {
            effects.add(effect);
          }
        });
      }
    };
    if (type === "clear" /* CLEAR */) {
      // collection being cleared
      // trigger all effects for target
      depsMap.forEach(add);
    }
    else if (key === 'length' && isArray(target)) {
      depsMap.forEach((dep, key) => {
        if (key === 'length' || key >= newValue) {
          add(dep);
        }
      });
    }
    else {
      // schedule runs for SET | ADD | DELETE
      if (key !== void 0) {
        add(depsMap.get(key));
      }
      // also run for iteration key on ADD | DELETE | Map.SET
      switch (type) {
        case "add" /* ADD */:
          if (!isArray(target)) {
            add(depsMap.get(ITERATE_KEY));
            if (isMap(target)) {
              add(depsMap.get(MAP_KEY_ITERATE_KEY));
            }
          }
          else if (isIntegerKey(key)) {
            // new index added to array -> length changes
            add(depsMap.get('length'));
          }
          break;
        case "delete" /* DELETE */:
          if (!isArray(target)) {
            add(depsMap.get(ITERATE_KEY));
            if (isMap(target)) {
              add(depsMap.get(MAP_KEY_ITERATE_KEY));
            }
          }
          break;
        case "set" /* SET */:
          if (isMap(target)) {
            add(depsMap.get(ITERATE_KEY));
          }
          break;
      }
    }
    const run = (effect) => {
      if (effect.options.onTrigger) {
        effect.options.onTrigger({
          effect,
          target,
          key,
          type,
          newValue,
          oldValue,
          oldTarget
        });
      }
      if (effect.options.scheduler) {
        effect.options.scheduler(effect);
      }
      else {
        effect();
      }
    };
    effects.forEach(run);
  }

  const isNonTrackableKeys = /*#__PURE__*/ makeMap(`__proto__,__v_isRef,__isVue`);
  const builtInSymbols = new Set(Object.getOwnPropertyNames(Symbol)
    .map(key => Symbol[key])
    .filter(isSymbol));
  const get = /*#__PURE__*/ createGetter();
  const shallowGet = /*#__PURE__*/ createGetter(false, true);
  const readonlyGet = /*#__PURE__*/ createGetter(true);
  const shallowReadonlyGet = /*#__PURE__*/ createGetter(true, true);
  const arrayInstrumentations = {};
  ['includes', 'indexOf', 'lastIndexOf'].forEach(key => {
    const method = Array.prototype[key];
    arrayInstrumentations[key] = function (...args) {
      const arr = toRaw(this);
      for (let i = 0, l = this.length; i < l; i++) {
        track(arr, "get" /* GET */, i + '');
      }
      // we run the method using the original args first (which may be reactive)
      const res = method.apply(arr, args);
      if (res === -1 || res === false) {
        // if that didn't work, run it again using raw values.
        return method.apply(arr, args.map(toRaw));
      }
      else {
        return res;
      }
    };
  });
  ['push', 'pop', 'shift', 'unshift', 'splice'].forEach(key => {
    const method = Array.prototype[key];
    arrayInstrumentations[key] = function (...args) {
      pauseTracking();
      const res = method.apply(this, args);
      resetTracking();
      return res;
    };
  });
  function createGetter(isReadonly = false, shallow = false) {
    return function get(target, key, receiver) {
      if (key === "__v_isReactive" /* IS_REACTIVE */) {
        return !isReadonly;
      }
      else if (key === "__v_isReadonly" /* IS_READONLY */) {
        return isReadonly;
      }
      else if (key === "__v_raw" /* RAW */ &&
        receiver ===
        (isReadonly
          ? shallow
            ? shallowReadonlyMap
            : readonlyMap
          : shallow
            ? shallowReactiveMap
            : reactiveMap).get(target)) {
        return target;
      }
      const targetIsArray = isArray(target);
      if (!isReadonly && targetIsArray && hasOwn(arrayInstrumentations, key)) {
        return Reflect.get(arrayInstrumentations, key, receiver);
      }
      const res = Reflect.get(target, key, receiver);
      if (isSymbol(key)
        ? builtInSymbols.has(key)
        : isNonTrackableKeys(key)) {
        return res;
      }
      if (!isReadonly) {
        track(target, "get" /* GET */, key);
      }
      if (shallow) {
        return res;
      }
      if (isRef(res)) {
        // ref unwrapping - does not apply for Array + integer key.
        const shouldUnwrap = !targetIsArray || !isIntegerKey(key);
        return shouldUnwrap ? res.value : res;
      }
      if (isObject(res)) {
        // Convert returned value into a proxy as well. we do the isObject check
        // here to avoid invalid value warning. Also need to lazy access readonly
        // and reactive here to avoid circular dependency.
        return isReadonly ? readonly(res) : reactive(res);
      }
      return res;
    };
  }
  const set = /*#__PURE__*/ createSetter();
  const shallowSet = /*#__PURE__*/ createSetter(true);
  function createSetter(shallow = false) {
    return function set(target, key, value, receiver) {
      let oldValue = target[key];
      if (!shallow) {
        value = toRaw(value);
        oldValue = toRaw(oldValue);
        if (!isArray(target) && isRef(oldValue) && !isRef(value)) {
          oldValue.value = value;
          return true;
        }
      }
      const hadKey = isArray(target) && isIntegerKey(key)
        ? Number(key) < target.length
        : hasOwn(target, key);
      const result = Reflect.set(target, key, value, receiver);
      // don't trigger if target is something up in the prototype chain of original
      if (target === toRaw(receiver)) {
        if (!hadKey) {
          trigger(target, "add" /* ADD */, key, value);
        }
        else if (hasChanged(value, oldValue)) {
          trigger(target, "set" /* SET */, key, value, oldValue);
        }
      }
      return result;
    };
  }
  function deleteProperty(target, key) {
    const hadKey = hasOwn(target, key);
    const oldValue = target[key];
    const result = Reflect.deleteProperty(target, key);
    if (result && hadKey) {
      trigger(target, "delete" /* DELETE */, key, undefined, oldValue);
    }
    return result;
  }
  function has(target, key) {
    const result = Reflect.has(target, key);
    if (!isSymbol(key) || !builtInSymbols.has(key)) {
      track(target, "has" /* HAS */, key);
    }
    return result;
  }
  function ownKeys(target) {
    track(target, "iterate" /* ITERATE */, isArray(target) ? 'length' : ITERATE_KEY);
    return Reflect.ownKeys(target);
  }
  const mutableHandlers = {
    get,
    set,
    deleteProperty,
    has,
    ownKeys
  };
  const readonlyHandlers = {
    get: readonlyGet,
    set(target, key) {
      {
        console.warn(`Set operation on key "${String(key)}" failed: target is readonly.`, target);
      }
      return true;
    },
    deleteProperty(target, key) {
      {
        console.warn(`Delete operation on key "${String(key)}" failed: target is readonly.`, target);
      }
      return true;
    }
  };
  const shallowReactiveHandlers = extend({}, mutableHandlers, {
    get: shallowGet,
    set: shallowSet
  });
  // Props handlers are special in the sense that it should not unwrap top-level
  // refs (in order to allow refs to be explicitly passed down), but should
  // retain the reactivity of the normal readonly object.
  const shallowReadonlyHandlers = extend({}, readonlyHandlers, {
    get: shallowReadonlyGet
  });

  const toReactive = (value) => isObject(value) ? reactive(value) : value;
  const toReadonly = (value) => isObject(value) ? readonly(value) : value;
  const toShallow = (value) => value;
  const getProto = (v) => Reflect.getPrototypeOf(v);
  function get$1(target, key, isReadonly = false, isShallow = false) {
    // #1772: readonly(reactive(Map)) should return readonly + reactive version
    // of the value
    target = target["__v_raw" /* RAW */];
    const rawTarget = toRaw(target);
    const rawKey = toRaw(key);
    if (key !== rawKey) {
      !isReadonly && track(rawTarget, "get" /* GET */, key);
    }
    !isReadonly && track(rawTarget, "get" /* GET */, rawKey);
    const { has } = getProto(rawTarget);
    const wrap = isShallow ? toShallow : isReadonly ? toReadonly : toReactive;
    if (has.call(rawTarget, key)) {
      return wrap(target.get(key));
    }
    else if (has.call(rawTarget, rawKey)) {
      return wrap(target.get(rawKey));
    }
  }
  function has$1(key, isReadonly = false) {
    const target = this["__v_raw" /* RAW */];
    const rawTarget = toRaw(target);
    const rawKey = toRaw(key);
    if (key !== rawKey) {
      !isReadonly && track(rawTarget, "has" /* HAS */, key);
    }
    !isReadonly && track(rawTarget, "has" /* HAS */, rawKey);
    return key === rawKey
      ? target.has(key)
      : target.has(key) || target.has(rawKey);
  }
  function size(target, isReadonly = false) {
    target = target["__v_raw" /* RAW */];
    !isReadonly && track(toRaw(target), "iterate" /* ITERATE */, ITERATE_KEY);
    return Reflect.get(target, 'size', target);
  }
  function add(value) {
    value = toRaw(value);
    const target = toRaw(this);
    const proto = getProto(target);
    const hadKey = proto.has.call(target, value);
    if (!hadKey) {
      target.add(value);
      trigger(target, "add" /* ADD */, value, value);
    }
    return this;
  }
  function set$1(key, value) {
    value = toRaw(value);
    const target = toRaw(this);
    const { has, get } = getProto(target);
    let hadKey = has.call(target, key);
    if (!hadKey) {
      key = toRaw(key);
      hadKey = has.call(target, key);
    }
    else {
      checkIdentityKeys(target, has, key);
    }
    const oldValue = get.call(target, key);
    target.set(key, value);
    if (!hadKey) {
      trigger(target, "add" /* ADD */, key, value);
    }
    else if (hasChanged(value, oldValue)) {
      trigger(target, "set" /* SET */, key, value, oldValue);
    }
    return this;
  }
  function deleteEntry(key) {
    const target = toRaw(this);
    const { has, get } = getProto(target);
    let hadKey = has.call(target, key);
    if (!hadKey) {
      key = toRaw(key);
      hadKey = has.call(target, key);
    }
    else {
      checkIdentityKeys(target, has, key);
    }
    const oldValue = get ? get.call(target, key) : undefined;
    // forward the operation before queueing reactions
    const result = target.delete(key);
    if (hadKey) {
      trigger(target, "delete" /* DELETE */, key, undefined, oldValue);
    }
    return result;
  }
  function clear() {
    const target = toRaw(this);
    const hadItems = target.size !== 0;
    const oldTarget = isMap(target)
      ? new Map(target)
      : new Set(target)
    ;
    // forward the operation before queueing reactions
    const result = target.clear();
    if (hadItems) {
      trigger(target, "clear" /* CLEAR */, undefined, undefined, oldTarget);
    }
    return result;
  }
  function createForEach(isReadonly, isShallow) {
    return function forEach(callback, thisArg) {
      const observed = this;
      const target = observed["__v_raw" /* RAW */];
      const rawTarget = toRaw(target);
      const wrap = isShallow ? toShallow : isReadonly ? toReadonly : toReactive;
      !isReadonly && track(rawTarget, "iterate" /* ITERATE */, ITERATE_KEY);
      return target.forEach((value, key) => {
        // important: make sure the callback is
        // 1. invoked with the reactive map as `this` and 3rd arg
        // 2. the value received should be a corresponding reactive/readonly.
        return callback.call(thisArg, wrap(value), wrap(key), observed);
      });
    };
  }
  function createIterableMethod(method, isReadonly, isShallow) {
    return function (...args) {
      const target = this["__v_raw" /* RAW */];
      const rawTarget = toRaw(target);
      const targetIsMap = isMap(rawTarget);
      const isPair = method === 'entries' || (method === Symbol.iterator && targetIsMap);
      const isKeyOnly = method === 'keys' && targetIsMap;
      const innerIterator = target[method](...args);
      const wrap = isShallow ? toShallow : isReadonly ? toReadonly : toReactive;
      !isReadonly &&
      track(rawTarget, "iterate" /* ITERATE */, isKeyOnly ? MAP_KEY_ITERATE_KEY : ITERATE_KEY);
      // return a wrapped iterator which returns observed versions of the
      // values emitted from the real iterator
      return {
        // iterator protocol
        next() {
          const { value, done } = innerIterator.next();
          return done
            ? { value, done }
            : {
              value: isPair ? [wrap(value[0]), wrap(value[1])] : wrap(value),
              done
            };
        },
        // iterable protocol
        [Symbol.iterator]() {
          return this;
        }
      };
    };
  }
  function createReadonlyMethod(type) {
    return function (...args) {
      {
        const key = args[0] ? `on key "${args[0]}" ` : ``;
        console.warn(`${capitalize(type)} operation ${key}failed: target is readonly.`, toRaw(this));
      }
      return type === "delete" /* DELETE */ ? false : this;
    };
  }
  const mutableInstrumentations = {
    get(key) {
      return get$1(this, key);
    },
    get size() {
      return size(this);
    },
    has: has$1,
    add,
    set: set$1,
    delete: deleteEntry,
    clear,
    forEach: createForEach(false, false)
  };
  const shallowInstrumentations = {
    get(key) {
      return get$1(this, key, false, true);
    },
    get size() {
      return size(this);
    },
    has: has$1,
    add,
    set: set$1,
    delete: deleteEntry,
    clear,
    forEach: createForEach(false, true)
  };
  const readonlyInstrumentations = {
    get(key) {
      return get$1(this, key, true);
    },
    get size() {
      return size(this, true);
    },
    has(key) {
      return has$1.call(this, key, true);
    },
    add: createReadonlyMethod("add" /* ADD */),
    set: createReadonlyMethod("set" /* SET */),
    delete: createReadonlyMethod("delete" /* DELETE */),
    clear: createReadonlyMethod("clear" /* CLEAR */),
    forEach: createForEach(true, false)
  };
  const shallowReadonlyInstrumentations = {
    get(key) {
      return get$1(this, key, true, true);
    },
    get size() {
      return size(this, true);
    },
    has(key) {
      return has$1.call(this, key, true);
    },
    add: createReadonlyMethod("add" /* ADD */),
    set: createReadonlyMethod("set" /* SET */),
    delete: createReadonlyMethod("delete" /* DELETE */),
    clear: createReadonlyMethod("clear" /* CLEAR */),
    forEach: createForEach(true, true)
  };
  const iteratorMethods = ['keys', 'values', 'entries', Symbol.iterator];
  iteratorMethods.forEach(method => {
    mutableInstrumentations[method] = createIterableMethod(method, false, false);
    readonlyInstrumentations[method] = createIterableMethod(method, true, false);
    shallowInstrumentations[method] = createIterableMethod(method, false, true);
    shallowReadonlyInstrumentations[method] = createIterableMethod(method, true, true);
  });
  function createInstrumentationGetter(isReadonly, shallow) {
    const instrumentations = shallow
      ? isReadonly
        ? shallowReadonlyInstrumentations
        : shallowInstrumentations
      : isReadonly
        ? readonlyInstrumentations
        : mutableInstrumentations;
    return (target, key, receiver) => {
      if (key === "__v_isReactive" /* IS_REACTIVE */) {
        return !isReadonly;
      }
      else if (key === "__v_isReadonly" /* IS_READONLY */) {
        return isReadonly;
      }
      else if (key === "__v_raw" /* RAW */) {
        return target;
      }
      return Reflect.get(hasOwn(instrumentations, key) && key in target
        ? instrumentations
        : target, key, receiver);
    };
  }
  const mutableCollectionHandlers = {
    get: createInstrumentationGetter(false, false)
  };
  const shallowCollectionHandlers = {
    get: createInstrumentationGetter(false, true)
  };
  const readonlyCollectionHandlers = {
    get: createInstrumentationGetter(true, false)
  };
  const shallowReadonlyCollectionHandlers = {
    get: createInstrumentationGetter(true, true)
  };
  function checkIdentityKeys(target, has, key) {
    const rawKey = toRaw(key);
    if (rawKey !== key && has.call(target, rawKey)) {
      const type = toRawType(target);
      console.warn(`Reactive ${type} contains both the raw and reactive ` +
        `versions of the same object${type === `Map` ? ` as keys` : ``}, ` +
        `which can lead to inconsistencies. ` +
        `Avoid differentiating between the raw and reactive versions ` +
        `of an object and only use the reactive version if possible.`);
    }
  }

  const reactiveMap = new WeakMap();
  const shallowReactiveMap = new WeakMap();
  const readonlyMap = new WeakMap();
  const shallowReadonlyMap = new WeakMap();
  function targetTypeMap(rawType) {
    switch (rawType) {
      case 'Object':
      case 'Array':
        return 1 /* COMMON */;
      case 'Map':
      case 'Set':
      case 'WeakMap':
      case 'WeakSet':
        return 2 /* COLLECTION */;
      default:
        return 0 /* INVALID */;
    }
  }
  function getTargetType(value) {
    return value["__v_skip" /* SKIP */] || !Object.isExtensible(value)
      ? 0 /* INVALID */
      : targetTypeMap(toRawType(value));
  }
  function reactive(target) {
    // if trying to observe a readonly proxy, return the readonly version.
    if (target && target["__v_isReadonly" /* IS_READONLY */]) {
      return target;
    }
    return createReactiveObject(target, false, mutableHandlers, mutableCollectionHandlers, reactiveMap);
  }
  /**
   * Return a shallowly-reactive copy of the original object, where only the root
   * level properties are reactive. It also does not auto-unwrap refs (even at the
   * root level).
   */
  function shallowReactive(target) {
    return createReactiveObject(target, false, shallowReactiveHandlers, shallowCollectionHandlers, shallowReactiveMap);
  }
  /**
   * Creates a readonly copy of the original object. Note the returned copy is not
   * made reactive, but `readonly` can be called on an already reactive object.
   */
  function readonly(target) {
    return createReactiveObject(target, true, readonlyHandlers, readonlyCollectionHandlers, readonlyMap);
  }
  /**
   * Returns a reactive-copy of the original object, where only the root level
   * properties are readonly, and does NOT unwrap refs nor recursively convert
   * returned properties.
   * This is used for creating the props proxy object for stateful components.
   */
  function shallowReadonly(target) {
    return createReactiveObject(target, true, shallowReadonlyHandlers, shallowReadonlyCollectionHandlers, shallowReadonlyMap);
  }
  function createReactiveObject(target, isReadonly, baseHandlers, collectionHandlers, proxyMap) {
    if (!isObject(target)) {
      {
        console.warn(`value cannot be made reactive: ${String(target)}`);
      }
      return target;
    }
    // target is already a Proxy, return it.
    // exception: calling readonly() on a reactive object
    if (target["__v_raw" /* RAW */] &&
      !(isReadonly && target["__v_isReactive" /* IS_REACTIVE */])) {
      return target;
    }
    // target already has corresponding Proxy
    const existingProxy = proxyMap.get(target);
    if (existingProxy) {
      return existingProxy;
    }
    // only a whitelist of value types can be observed.
    const targetType = getTargetType(target);
    if (targetType === 0 /* INVALID */) {
      return target;
    }
    const proxy = new Proxy(target, targetType === 2 /* COLLECTION */ ? collectionHandlers : baseHandlers);
    proxyMap.set(target, proxy);
    return proxy;
  }
  function isReactive(value) {
    if (isReadonly(value)) {
      return isReactive(value["__v_raw" /* RAW */]);
    }
    return !!(value && value["__v_isReactive" /* IS_REACTIVE */]);
  }
  function isReadonly(value) {
    return !!(value && value["__v_isReadonly" /* IS_READONLY */]);
  }
  function isProxy(value) {
    return isReactive(value) || isReadonly(value);
  }
  function toRaw(observed) {
    return ((observed && toRaw(observed["__v_raw" /* RAW */])) || observed);
  }
  function markRaw(value) {
    def(value, "__v_skip" /* SKIP */, true);
    return value;
  }

  const convert = (val) => isObject(val) ? reactive(val) : val;
  function isRef(r) {
    return Boolean(r && r.__v_isRef === true);
  }
  function ref(value) {
    return createRef(value);
  }
  function shallowRef(value) {
    return createRef(value, true);
  }
  class RefImpl {
    constructor(_rawValue, _shallow = false) {
      this._rawValue = _rawValue;
      this._shallow = _shallow;
      this.__v_isRef = true;
      this._value = _shallow ? _rawValue : convert(_rawValue);
    }
    get value() {
      track(toRaw(this), "get" /* GET */, 'value');
      return this._value;
    }
    set value(newVal) {
      if (hasChanged(toRaw(newVal), this._rawValue)) {
        this._rawValue = newVal;
        this._value = this._shallow ? newVal : convert(newVal);
        trigger(toRaw(this), "set" /* SET */, 'value', newVal);
      }
    }
  }
  function createRef(rawValue, shallow = false) {
    if (isRef(rawValue)) {
      return rawValue;
    }
    return new RefImpl(rawValue, shallow);
  }
  function triggerRef(ref) {
    trigger(toRaw(ref), "set" /* SET */, 'value', ref.value );
  }
  function unref(ref) {
    return isRef(ref) ? ref.value : ref;
  }
  const shallowUnwrapHandlers = {
    get: (target, key, receiver) => unref(Reflect.get(target, key, receiver)),
    set: (target, key, value, receiver) => {
      const oldValue = target[key];
      if (isRef(oldValue) && !isRef(value)) {
        oldValue.value = value;
        return true;
      }
      else {
        return Reflect.set(target, key, value, receiver);
      }
    }
  };
  function proxyRefs(objectWithRefs) {
    return isReactive(objectWithRefs)
      ? objectWithRefs
      : new Proxy(objectWithRefs, shallowUnwrapHandlers);
  }
  class CustomRefImpl {
    constructor(factory) {
      this.__v_isRef = true;
      const { get, set } = factory(() => track(this, "get" /* GET */, 'value'), () => trigger(this, "set" /* SET */, 'value'));
      this._get = get;
      this._set = set;
    }
    get value() {
      return this._get();
    }
    set value(newVal) {
      this._set(newVal);
    }
  }
  function customRef(factory) {
    return new CustomRefImpl(factory);
  }
  function toRefs(object) {
    if (!isProxy(object)) {
      console.warn(`toRefs() expects a reactive object but received a plain one.`);
    }
    const ret = isArray(object) ? new Array(object.length) : {};
    for (const key in object) {
      ret[key] = toRef(object, key);
    }
    return ret;
  }
  class ObjectRefImpl {
    constructor(_object, _key) {
      this._object = _object;
      this._key = _key;
      this.__v_isRef = true;
    }
    get value() {
      return this._object[this._key];
    }
    set value(newVal) {
      this._object[this._key] = newVal;
    }
  }
  function toRef(object, key) {
    return isRef(object[key])
      ? object[key]
      : new ObjectRefImpl(object, key);
  }

  class ComputedRefImpl {
    constructor(getter, _setter, isReadonly) {
      this._setter = _setter;
      this._dirty = true;
      this.__v_isRef = true;
      this.effect = effect(getter, {
        lazy: true,
        scheduler: () => {
          if (!this._dirty) {
            this._dirty = true;
            trigger(toRaw(this), "set" /* SET */, 'value');
          }
        }
      });
      this["__v_isReadonly" /* IS_READONLY */] = isReadonly;
    }
    get value() {
      // the computed ref may get wrapped by other proxies e.g. readonly() #3376
      const self = toRaw(this);
      if (self._dirty) {
        self._value = this.effect();
        self._dirty = false;
      }
      track(self, "get" /* GET */, 'value');
      return self._value;
    }
    set value(newValue) {
      this._setter(newValue);
    }
  }
  function computed(getterOrOptions) {
    let getter;
    let setter;
    if (isFunction(getterOrOptions)) {
      getter = getterOrOptions;
      setter = () => {
        console.warn('Write operation failed: computed value is readonly');
      }
      ;
    }
    else {
      getter = getterOrOptions.get;
      setter = getterOrOptions.set;
    }
    return new ComputedRefImpl(getter, setter, isFunction(getterOrOptions) || !getterOrOptions.set);
  }

  const stack = [];
  function pushWarningContext(vnode) {
    stack.push(vnode);
  }
  function popWarningContext() {
    stack.pop();
  }
  function warn(msg, ...args) {
    // avoid props formatting or warn handler tracking deps that might be mutated
    // during patch, leading to infinite recursion.
    pauseTracking();
    const instance = stack.length ? stack[stack.length - 1].component : null;
    const appWarnHandler = instance && instance.appContext.config.warnHandler;
    const trace = getComponentTrace();
    if (appWarnHandler) {
      callWithErrorHandling(appWarnHandler, instance, 11 /* APP_WARN_HANDLER */, [
        msg + args.join(''),
        instance && instance.proxy,
        trace
          .map(({ vnode }) => `at <${formatComponentName(instance, vnode.type)}>`)
          .join('\n'),
        trace
      ]);
    }
    else {
      const warnArgs = [`[Vue warn]: ${msg}`, ...args];
      /* istanbul ignore if */
      if (trace.length &&
        // avoid spamming console during tests
        !false) {
        warnArgs.push(`\n`, ...formatTrace(trace));
      }
      console.warn(...warnArgs);
    }
    resetTracking();
  }
  function getComponentTrace() {
    let currentVNode = stack[stack.length - 1];
    if (!currentVNode) {
      return [];
    }
    // we can't just use the stack because it will be incomplete during updates
    // that did not start from the root. Re-construct the parent chain using
    // instance parent pointers.
    const normalizedStack = [];
    while (currentVNode) {
      const last = normalizedStack[0];
      if (last && last.vnode === currentVNode) {
        last.recurseCount++;
      }
      else {
        normalizedStack.push({
          vnode: currentVNode,
          recurseCount: 0
        });
      }
      const parentInstance = currentVNode.component && currentVNode.component.parent;
      currentVNode = parentInstance && parentInstance.vnode;
    }
    return normalizedStack;
  }
  /* istanbul ignore next */
  function formatTrace(trace) {
    const logs = [];
    trace.forEach((entry, i) => {
      logs.push(...(i === 0 ? [] : [`\n`]), ...formatTraceEntry(entry));
    });
    return logs;
  }
  function formatTraceEntry({ vnode, recurseCount }) {
    const postfix = recurseCount > 0 ? `... (${recurseCount} recursive calls)` : ``;
    const isRoot = vnode.component ? vnode.component.parent == null : false;
    const open = ` at <${formatComponentName(vnode.component, vnode.type, isRoot)}`;
    const close = `>` + postfix;
    return vnode.props
      ? [open, ...formatProps(vnode.props), close]
      : [open + close];
  }
  /* istanbul ignore next */
  function formatProps(props) {
    const res = [];
    const keys = Object.keys(props);
    keys.slice(0, 3).forEach(key => {
      res.push(...formatProp(key, props[key]));
    });
    if (keys.length > 3) {
      res.push(` ...`);
    }
    return res;
  }
  /* istanbul ignore next */
  function formatProp(key, value, raw) {
    if (isString(value)) {
      value = JSON.stringify(value);
      return raw ? value : [`${key}=${value}`];
    }
    else if (typeof value === 'number' ||
      typeof value === 'boolean' ||
      value == null) {
      return raw ? value : [`${key}=${value}`];
    }
    else if (isRef(value)) {
      value = formatProp(key, toRaw(value.value), true);
      return raw ? value : [`${key}=Ref<`, value, `>`];
    }
    else if (isFunction(value)) {
      return [`${key}=fn${value.name ? `<${value.name}>` : ``}`];
    }
    else {
      value = toRaw(value);
      return raw ? value : [`${key}=`, value];
    }
  }

  const ErrorTypeStrings = {
    ["bc" /* BEFORE_CREATE */]: 'beforeCreate hook',
    ["c" /* CREATED */]: 'created hook',
    ["bm" /* BEFORE_MOUNT */]: 'beforeMount hook',
    ["m" /* MOUNTED */]: 'mounted hook',
    ["bu" /* BEFORE_UPDATE */]: 'beforeUpdate hook',
    ["u" /* UPDATED */]: 'updated',
    ["bum" /* BEFORE_UNMOUNT */]: 'beforeUnmount hook',
    ["um" /* UNMOUNTED */]: 'unmounted hook',
    ["a" /* ACTIVATED */]: 'activated hook',
    ["da" /* DEACTIVATED */]: 'deactivated hook',
    ["ec" /* ERROR_CAPTURED */]: 'errorCaptured hook',
    ["rtc" /* RENDER_TRACKED */]: 'renderTracked hook',
    ["rtg" /* RENDER_TRIGGERED */]: 'renderTriggered hook',
    [0 /* SETUP_FUNCTION */]: 'setup function',
    [1 /* RENDER_FUNCTION */]: 'render function',
    [2 /* WATCH_GETTER */]: 'watcher getter',
    [3 /* WATCH_CALLBACK */]: 'watcher callback',
    [4 /* WATCH_CLEANUP */]: 'watcher cleanup function',
    [5 /* NATIVE_EVENT_HANDLER */]: 'native event handler',
    [6 /* COMPONENT_EVENT_HANDLER */]: 'component event handler',
    [7 /* VNODE_HOOK */]: 'vnode hook',
    [8 /* DIRECTIVE_HOOK */]: 'directive hook',
    [9 /* TRANSITION_HOOK */]: 'transition hook',
    [10 /* APP_ERROR_HANDLER */]: 'app errorHandler',
    [11 /* APP_WARN_HANDLER */]: 'app warnHandler',
    [12 /* FUNCTION_REF */]: 'ref function',
    [13 /* ASYNC_COMPONENT_LOADER */]: 'async component loader',
    [14 /* SCHEDULER */]: 'scheduler flush. This is likely a Vue internals bug. ' +
    'Please open an issue at https://new-issue.vuejs.org/?repo=vuejs/vue-next'
  };
  function callWithErrorHandling(fn, instance, type, args) {
    let res;
    try {
      res = args ? fn(...args) : fn();
    }
    catch (err) {
      handleError(err, instance, type);
    }
    return res;
  }
  function callWithAsyncErrorHandling(fn, instance, type, args) {
    if (isFunction(fn)) {
      const res = callWithErrorHandling(fn, instance, type, args);
      if (res && isPromise(res)) {
        res.catch(err => {
          handleError(err, instance, type);
        });
      }
      return res;
    }
    const values = [];
    for (let i = 0; i < fn.length; i++) {
      values.push(callWithAsyncErrorHandling(fn[i], instance, type, args));
    }
    return values;
  }
  function handleError(err, instance, type, throwInDev = true) {
    const contextVNode = instance ? instance.vnode : null;
    if (instance) {
      let cur = instance.parent;
      // the exposed instance is the render proxy to keep it consistent with 2.x
      const exposedInstance = instance.proxy;
      // in production the hook receives only the error code
      const errorInfo = ErrorTypeStrings[type] ;
      while (cur) {
        const errorCapturedHooks = cur.ec;
        if (errorCapturedHooks) {
          for (let i = 0; i < errorCapturedHooks.length; i++) {
            if (errorCapturedHooks[i](err, exposedInstance, errorInfo) === false) {
              return;
            }
          }
        }
        cur = cur.parent;
      }
      // app-level handling
      const appErrorHandler = instance.appContext.config.errorHandler;
      if (appErrorHandler) {
        callWithErrorHandling(appErrorHandler, null, 10 /* APP_ERROR_HANDLER */, [err, exposedInstance, errorInfo]);
        return;
      }
    }
    logError(err, type, contextVNode, throwInDev);
  }
  function logError(err, type, contextVNode, throwInDev = true) {
    {
      const info = ErrorTypeStrings[type];
      if (contextVNode) {
        pushWarningContext(contextVNode);
      }
      warn(`Unhandled error${info ? ` during execution of ${info}` : ``}`);
      if (contextVNode) {
        popWarningContext();
      }
      // crash in dev by default so it's more noticeable
      if (throwInDev) {
        throw err;
      }
      else {
        console.error(err);
      }
    }
  }

  let isFlushing = false;
  let isFlushPending = false;
  const queue = [];
  let flushIndex = 0;
  const pendingPreFlushCbs = [];
  let activePreFlushCbs = null;
  let preFlushIndex = 0;
  const pendingPostFlushCbs = [];
  let activePostFlushCbs = null;
  let postFlushIndex = 0;
  const resolvedPromise = Promise.resolve();
  let currentFlushPromise = null;
  let currentPreFlushParentJob = null;
  const RECURSION_LIMIT = 100;
  function nextTick(fn) {
    const p = currentFlushPromise || resolvedPromise;
    return fn ? p.then(this ? fn.bind(this) : fn) : p;
  }
  // #2768
  // Use binary-search to find a suitable position in the queue,
  // so that the queue maintains the increasing order of job's id,
  // which can prevent the job from being skipped and also can avoid repeated patching.
  function findInsertionIndex(job) {
    // the start index should be `flushIndex + 1`
    let start = flushIndex + 1;
    let end = queue.length;
    const jobId = getId(job);
    while (start < end) {
      const middle = (start + end) >>> 1;
      const middleJobId = getId(queue[middle]);
      middleJobId < jobId ? (start = middle + 1) : (end = middle);
    }
    return start;
  }
  function queueJob(job) {
    // the dedupe search uses the startIndex argument of Array.includes()
    // by default the search index includes the current job that is being run
    // so it cannot recursively trigger itself again.
    // if the job is a watch() callback, the search will start with a +1 index to
    // allow it recursively trigger itself - it is the user's responsibility to
    // ensure it doesn't end up in an infinite loop.
    if ((!queue.length ||
      !queue.includes(job, isFlushing && job.allowRecurse ? flushIndex + 1 : flushIndex)) &&
      job !== currentPreFlushParentJob) {
      const pos = findInsertionIndex(job);
      if (pos > -1) {
        queue.splice(pos, 0, job);
      }
      else {
        queue.push(job);
      }
      queueFlush();
    }
  }
  function queueFlush() {
    if (!isFlushing && !isFlushPending) {
      isFlushPending = true;
      currentFlushPromise = resolvedPromise.then(flushJobs);
    }
  }
  function invalidateJob(job) {
    const i = queue.indexOf(job);
    if (i > flushIndex) {
      queue.splice(i, 1);
    }
  }
  function queueCb(cb, activeQueue, pendingQueue, index) {
    if (!isArray(cb)) {
      if (!activeQueue ||
        !activeQueue.includes(cb, cb.allowRecurse ? index + 1 : index)) {
        pendingQueue.push(cb);
      }
    }
    else {
      // if cb is an array, it is a component lifecycle hook which can only be
      // triggered by a job, which is already deduped in the main queue, so
      // we can skip duplicate check here to improve perf
      pendingQueue.push(...cb);
    }
    queueFlush();
  }
  function queuePreFlushCb(cb) {
    queueCb(cb, activePreFlushCbs, pendingPreFlushCbs, preFlushIndex);
  }
  function queuePostFlushCb(cb) {
    queueCb(cb, activePostFlushCbs, pendingPostFlushCbs, postFlushIndex);
  }
  function flushPreFlushCbs(seen, parentJob = null) {
    if (pendingPreFlushCbs.length) {
      currentPreFlushParentJob = parentJob;
      activePreFlushCbs = [...new Set(pendingPreFlushCbs)];
      pendingPreFlushCbs.length = 0;
      {
        seen = seen || new Map();
      }
      for (preFlushIndex = 0; preFlushIndex < activePreFlushCbs.length; preFlushIndex++) {
        {
          checkRecursiveUpdates(seen, activePreFlushCbs[preFlushIndex]);
        }
        activePreFlushCbs[preFlushIndex]();
      }
      activePreFlushCbs = null;
      preFlushIndex = 0;
      currentPreFlushParentJob = null;
      // recursively flush until it drains
      flushPreFlushCbs(seen, parentJob);
    }
  }
  function flushPostFlushCbs(seen) {
    if (pendingPostFlushCbs.length) {
      const deduped = [...new Set(pendingPostFlushCbs)];
      pendingPostFlushCbs.length = 0;
      // #1947 already has active queue, nested flushPostFlushCbs call
      if (activePostFlushCbs) {
        activePostFlushCbs.push(...deduped);
        return;
      }
      activePostFlushCbs = deduped;
      {
        seen = seen || new Map();
      }
      activePostFlushCbs.sort((a, b) => getId(a) - getId(b));
      for (postFlushIndex = 0; postFlushIndex < activePostFlushCbs.length; postFlushIndex++) {
        {
          checkRecursiveUpdates(seen, activePostFlushCbs[postFlushIndex]);
        }
        activePostFlushCbs[postFlushIndex]();
      }
      activePostFlushCbs = null;
      postFlushIndex = 0;
    }
  }
  const getId = (job) => job.id == null ? Infinity : job.id;
  function flushJobs(seen) {
    isFlushPending = false;
    isFlushing = true;
    {
      seen = seen || new Map();
    }
    flushPreFlushCbs(seen);
    // Sort queue before flush.
    // This ensures that:
    // 1. Components are updated from parent to child. (because parent is always
    //    created before the child so its render effect will have smaller
    //    priority number)
    // 2. If a component is unmounted during a parent component's update,
    //    its update can be skipped.
    queue.sort((a, b) => getId(a) - getId(b));
    try {
      for (flushIndex = 0; flushIndex < queue.length; flushIndex++) {
        const job = queue[flushIndex];
        if (job) {
          if (true) {
            checkRecursiveUpdates(seen, job);
          }
          callWithErrorHandling(job, null, 14 /* SCHEDULER */);
        }
      }
    }
    finally {
      flushIndex = 0;
      queue.length = 0;
      flushPostFlushCbs(seen);
      isFlushing = false;
      currentFlushPromise = null;
      // some postFlushCb queued jobs!
      // keep flushing until it drains.
      if (queue.length || pendingPostFlushCbs.length) {
        flushJobs(seen);
      }
    }
  }
  function checkRecursiveUpdates(seen, fn) {
    if (!seen.has(fn)) {
      seen.set(fn, 1);
    }
    else {
      const count = seen.get(fn);
      if (count > RECURSION_LIMIT) {
        throw new Error(`Maximum recursive updates exceeded. ` +
          `This means you have a reactive effect that is mutating its own ` +
          `dependencies and thus recursively triggering itself. Possible sources ` +
          `include component template, render function, updated hook or ` +
          `watcher source function.`);
      }
      else {
        seen.set(fn, count + 1);
      }
    }
  }

  /* eslint-disable no-restricted-globals */
  let isHmrUpdating = false;
  const hmrDirtyComponents = new Set();
  // Expose the HMR runtime on the global object
  // This makes it entirely tree-shakable without polluting the exports and makes
  // it easier to be used in toolings like vue-loader
  // Note: for a component to be eligible for HMR it also needs the __hmrId option
  // to be set so that its instances can be registered / removed.
  {
    const globalObject = typeof global !== 'undefined'
      ? global
      : typeof self !== 'undefined'
        ? self
        : typeof window !== 'undefined'
          ? window
          : {};
    globalObject.__VUE_HMR_RUNTIME__ = {
      createRecord: tryWrap(createRecord),
      rerender: tryWrap(rerender),
      reload: tryWrap(reload)
    };
  }
  const map = new Map();
  function registerHMR(instance) {
    const id = instance.type.__hmrId;
    let record = map.get(id);
    if (!record) {
      createRecord(id, instance.type);
      record = map.get(id);
    }
    record.instances.add(instance);
  }
  function unregisterHMR(instance) {
    map.get(instance.type.__hmrId).instances.delete(instance);
  }
  function createRecord(id, component) {
    if (!component) {
      warn(`HMR API usage is out of date.\n` +
        `Please upgrade vue-loader/vite/rollup-plugin-vue or other relevant ` +
        `dependency that handles Vue SFC compilation.`);
      component = {};
    }
    if (map.has(id)) {
      return false;
    }
    map.set(id, {
      component: isClassComponent(component) ? component.__vccOpts : component,
      instances: new Set()
    });
    return true;
  }
  function rerender(id, newRender) {
    const record = map.get(id);
    if (!record)
      return;
    if (newRender)
      record.component.render = newRender;
    // Array.from creates a snapshot which avoids the set being mutated during
    // updates
    Array.from(record.instances).forEach(instance => {
      if (newRender) {
        instance.render = newRender;
      }
      instance.renderCache = [];
      // this flag forces child components with slot content to update
      isHmrUpdating = true;
      instance.update();
      isHmrUpdating = false;
    });
  }
  function reload(id, newComp) {
    const record = map.get(id);
    if (!record)
      return;
    // Array.from creates a snapshot which avoids the set being mutated during
    // updates
    const { component, instances } = record;
    if (!hmrDirtyComponents.has(component)) {
      // 1. Update existing comp definition to match new one
      newComp = isClassComponent(newComp) ? newComp.__vccOpts : newComp;
      extend(component, newComp);
      for (const key in component) {
        if (!(key in newComp)) {
          delete component[key];
        }
      }
      // 2. Mark component dirty. This forces the renderer to replace the component
      // on patch.
      hmrDirtyComponents.add(component);
      // 3. Make sure to unmark the component after the reload.
      queuePostFlushCb(() => {
        hmrDirtyComponents.delete(component);
      });
    }
    Array.from(instances).forEach(instance => {
      if (instance.parent) {
        // 4. Force the parent instance to re-render. This will cause all updated
        // components to be unmounted and re-mounted. Queue the update so that we
        // don't end up forcing the same parent to re-render multiple times.
        queueJob(instance.parent.update);
      }
      else if (instance.appContext.reload) {
        // root instance mounted via createApp() has a reload method
        instance.appContext.reload();
      }
      else if (typeof window !== 'undefined') {
        // root instance inside tree created via raw render(). Force reload.
        window.location.reload();
      }
      else {
        console.warn('[HMR] Root or manually mounted instance modified. Full reload required.');
      }
    });
  }
  function tryWrap(fn) {
    return (id, arg) => {
      try {
        return fn(id, arg);
      }
      catch (e) {
        console.error(e);
        console.warn(`[HMR] Something went wrong during Vue component hot-reload. ` +
          `Full reload required.`);
      }
    };
  }

  function setDevtoolsHook(hook) {
    exports.devtools = hook;
  }
  function devtoolsInitApp(app, version) {
    // TODO queue if devtools is undefined
    if (!exports.devtools)
      return;
    exports.devtools.emit("app:init" /* APP_INIT */, app, version, {
      Fragment,
      Text,
      Comment,
      Static
    });
  }
  function devtoolsUnmountApp(app) {
    if (!exports.devtools)
      return;
    exports.devtools.emit("app:unmount" /* APP_UNMOUNT */, app);
  }
  const devtoolsComponentAdded = /*#__PURE__*/ createDevtoolsComponentHook("component:added" /* COMPONENT_ADDED */);
  const devtoolsComponentUpdated = /*#__PURE__*/ createDevtoolsComponentHook("component:updated" /* COMPONENT_UPDATED */);
  const devtoolsComponentRemoved = /*#__PURE__*/ createDevtoolsComponentHook("component:removed" /* COMPONENT_REMOVED */);
  function createDevtoolsComponentHook(hook) {
    return (component) => {
      if (!exports.devtools)
        return;
      exports.devtools.emit(hook, component.appContext.app, component.uid, component.parent ? component.parent.uid : undefined, component);
    };
  }
  function devtoolsComponentEmit(component, event, params) {
    if (!exports.devtools)
      return;
    exports.devtools.emit("component:emit" /* COMPONENT_EMIT */, component.appContext.app, component, event, params);
  }

  function emit(instance, event, ...rawArgs) {
    const props = instance.vnode.props || EMPTY_OBJ;
    {
      const { emitsOptions, propsOptions: [propsOptions] } = instance;
      if (emitsOptions) {
        if (!(event in emitsOptions)) {
          if (!propsOptions || !(toHandlerKey(event) in propsOptions)) {
            warn(`Component emitted event "${event}" but it is neither declared in ` +
              `the emits option nor as an "${toHandlerKey(event)}" prop.`);
          }
        }
        else {
          const validator = emitsOptions[event];
          if (isFunction(validator)) {
            const isValid = validator(...rawArgs);
            if (!isValid) {
              warn(`Invalid event arguments: event validation failed for event "${event}".`);
            }
          }
        }
      }
    }
    let args = rawArgs;
    const isModelListener = event.startsWith('update:');
    // for v-model update:xxx events, apply modifiers on args
    const modelArg = isModelListener && event.slice(7);
    if (modelArg && modelArg in props) {
      const modifiersKey = `${modelArg === 'modelValue' ? 'model' : modelArg}Modifiers`;
      const { number, trim } = props[modifiersKey] || EMPTY_OBJ;
      if (trim) {
        args = rawArgs.map(a => a.trim());
      }
      else if (number) {
        args = rawArgs.map(toNumber);
      }
    }
    {
      devtoolsComponentEmit(instance, event, args);
    }
    {
      const lowerCaseEvent = event.toLowerCase();
      if (lowerCaseEvent !== event && props[toHandlerKey(lowerCaseEvent)]) {
        warn(`Event "${lowerCaseEvent}" is emitted in component ` +
          `${formatComponentName(instance, instance.type)} but the handler is registered for "${event}". ` +
          `Note that HTML attributes are case-insensitive and you cannot use ` +
          `v-on to listen to camelCase events when using in-DOM templates. ` +
          `You should probably use "${hyphenate(event)}" instead of "${event}".`);
      }
    }
    let handlerName;
    let handler = props[(handlerName = toHandlerKey(event))] ||
      // also try camelCase event handler (#2249)
      props[(handlerName = toHandlerKey(camelize(event)))];
    // for v-model update:xxx events, also trigger kebab-case equivalent
    // for props passed via kebab-case
    if (!handler && isModelListener) {
      handler = props[(handlerName = toHandlerKey(hyphenate(event)))];
    }
    if (handler) {
      callWithAsyncErrorHandling(handler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
    }
    const onceHandler = props[handlerName + `Once`];
    if (onceHandler) {
      if (!instance.emitted) {
        (instance.emitted = {})[handlerName] = true;
      }
      else if (instance.emitted[handlerName]) {
        return;
      }
      callWithAsyncErrorHandling(onceHandler, instance, 6 /* COMPONENT_EVENT_HANDLER */, args);
    }
  }
  function normalizeEmitsOptions(comp, appContext, asMixin = false) {
    if (!appContext.deopt && comp.__emits !== undefined) {
      return comp.__emits;
    }
    const raw = comp.emits;
    let normalized = {};
    // apply mixin/extends props
    let hasExtends = false;
    if (!isFunction(comp)) {
      const extendEmits = (raw) => {
        const normalizedFromExtend = normalizeEmitsOptions(raw, appContext, true);
        if (normalizedFromExtend) {
          hasExtends = true;
          extend(normalized, normalizedFromExtend);
        }
      };
      if (!asMixin && appContext.mixins.length) {
        appContext.mixins.forEach(extendEmits);
      }
      if (comp.extends) {
        extendEmits(comp.extends);
      }
      if (comp.mixins) {
        comp.mixins.forEach(extendEmits);
      }
    }
    if (!raw && !hasExtends) {
      return (comp.__emits = null);
    }
    if (isArray(raw)) {
      raw.forEach(key => (normalized[key] = null));
    }
    else {
      extend(normalized, raw);
    }
    return (comp.__emits = normalized);
  }
  // Check if an incoming prop key is a declared emit event listener.
  // e.g. With `emits: { click: null }`, props named `onClick` and `onclick` are
  // both considered matched listeners.
  function isEmitListener(options, key) {
    if (!options || !isOn(key)) {
      return false;
    }
    key = key.slice(2).replace(/Once$/, '');
    return (hasOwn(options, key[0].toLowerCase() + key.slice(1)) ||
      hasOwn(options, hyphenate(key)) ||
      hasOwn(options, key));
  }

  let isRenderingCompiledSlot = 0;
  const setCompiledSlotRendering = (n) => (isRenderingCompiledSlot += n);
  /**
   * Compiler runtime helper for rendering `<slot/>`
   * @private
   */
  function renderSlot(slots, name, props = {},
                      // this is not a user-facing function, so the fallback is always generated by
                      // the compiler and guaranteed to be a function returning an array
                      fallback, noSlotted) {
    let slot = slots[name];
    if (slot && slot.length > 1) {
      warn(`SSR-optimized slot function detected in a non-SSR-optimized render ` +
        `function. You need to mark this component with $dynamic-slots in the ` +
        `parent template.`);
      slot = () => [];
    }
    // a compiled slot disables block tracking by default to avoid manual
    // invocation interfering with template-based block tracking, but in
    // `renderSlot` we can be sure that it's template-based so we can force
    // enable it.
    isRenderingCompiledSlot++;
    openBlock();
    const validSlotContent = slot && ensureValidVNode(slot(props));
    const rendered = createBlock(Fragment, { key: props.key || `_${name}` }, validSlotContent || (fallback ? fallback() : []), validSlotContent && slots._ === 1 /* STABLE */
      ? 64 /* STABLE_FRAGMENT */
      : -2 /* BAIL */);
    if (!noSlotted && rendered.scopeId) {
      rendered.slotScopeIds = [rendered.scopeId + '-s'];
    }
    isRenderingCompiledSlot--;
    return rendered;
  }
  function ensureValidVNode(vnodes) {
    return vnodes.some(child => {
      if (!isVNode(child))
        return true;
      if (child.type === Comment)
        return false;
      if (child.type === Fragment &&
        !ensureValidVNode(child.children))
        return false;
      return true;
    })
      ? vnodes
      : null;
  }

  /**
   * mark the current rendering instance for asset resolution (e.g.
   * resolveComponent, resolveDirective) during render
   */
  let currentRenderingInstance = null;
  let currentScopeId = null;
  /**
   * Note: rendering calls maybe nested. The function returns the parent rendering
   * instance if present, which should be restored after the render is done:
   *
   * ```js
   * const prev = setCurrentRenderingInstance(i)
   * // ...render
   * setCurrentRenderingInstance(prev)
   * ```
   */
  function setCurrentRenderingInstance(instance) {
    const prev = currentRenderingInstance;
    currentRenderingInstance = instance;
    currentScopeId = (instance && instance.type.__scopeId) || null;
    return prev;
  }
  /**
   * Set scope id when creating hoisted vnodes.
   * @private compiler helper
   */
  function pushScopeId(id) {
    currentScopeId = id;
  }
  /**
   * Technically we no longer need this after 3.0.8 but we need to keep the same
   * API for backwards compat w/ code generated by compilers.
   * @private
   */
  function popScopeId() {
    currentScopeId = null;
  }
  /**
   * Only for backwards compat
   * @private
   */
  const withScopeId = (_id) => withCtx;
  /**
   * Wrap a slot function to memoize current rendering instance
   * @private compiler helper
   */
  function withCtx(fn, ctx = currentRenderingInstance) {
    if (!ctx)
      return fn;
    const renderFnWithContext = (...args) => {
      // If a user calls a compiled slot inside a template expression (#1745), it
      // can mess up block tracking, so by default we need to push a null block to
      // avoid that. This isn't necessary if rendering a compiled `<slot>`.
      if (!isRenderingCompiledSlot) {
        openBlock(true /* null block that disables tracking */);
      }
      const prevInstance = setCurrentRenderingInstance(ctx);
      const res = fn(...args);
      setCurrentRenderingInstance(prevInstance);
      if (!isRenderingCompiledSlot) {
        closeBlock();
      }
      return res;
    };
    // mark this as a compiled slot function.
    // this is used in vnode.ts -> normalizeChildren() to set the slot
    // rendering flag.
    renderFnWithContext._c = true;
    return renderFnWithContext;
  }

  /**
   * dev only flag to track whether $attrs was used during render.
   * If $attrs was used during render then the warning for failed attrs
   * fallthrough can be suppressed.
   */
  let accessedAttrs = false;
  function markAttrsAccessed() {
    accessedAttrs = true;
  }
  function renderComponentRoot(instance) {
    const { type: Component, vnode, proxy, withProxy, props, propsOptions: [propsOptions], slots, attrs, emit, render, renderCache, data, setupState, ctx } = instance;
    let result;
    const prev = setCurrentRenderingInstance(instance);
    {
      accessedAttrs = false;
    }
    try {
      let fallthroughAttrs;
      if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
        // withProxy is a proxy with a different `has` trap only for
        // runtime-compiled render functions using `with` block.
        const proxyToUse = withProxy || proxy;
        result = normalizeVNode(render.call(proxyToUse, proxyToUse, renderCache, props, setupState, data, ctx));
        fallthroughAttrs = attrs;
      }
      else {
        // functional
        const render = Component;
        // in dev, mark attrs accessed if optional props (attrs === props)
        if (true && attrs === props) {
          markAttrsAccessed();
        }
        result = normalizeVNode(render.length > 1
          ? render(props, true
            ? {
              get attrs() {
                markAttrsAccessed();
                return attrs;
              },
              slots,
              emit
            }
            : { attrs, slots, emit })
          : render(props, null /* we know it doesn't need it */));
        fallthroughAttrs = Component.props
          ? attrs
          : getFunctionalFallthrough(attrs);
      }
      // attr merging
      // in dev mode, comments are preserved, and it's possible for a template
      // to have comments along side the root element which makes it a fragment
      let root = result;
      let setRoot = undefined;
      if (true &&
        result.patchFlag > 0 &&
        result.patchFlag & 2048 /* DEV_ROOT_FRAGMENT */) {
        ;
        [root, setRoot] = getChildRoot(result);
      }
      if (Component.inheritAttrs !== false && fallthroughAttrs) {
        const keys = Object.keys(fallthroughAttrs);
        const { shapeFlag } = root;
        if (keys.length) {
          if (shapeFlag & 1 /* ELEMENT */ ||
            shapeFlag & 6 /* COMPONENT */) {
            if (propsOptions && keys.some(isModelListener)) {
              // If a v-model listener (onUpdate:xxx) has a corresponding declared
              // prop, it indicates this component expects to handle v-model and
              // it should not fallthrough.
              // related: #1543, #1643, #1989
              fallthroughAttrs = filterModelListeners(fallthroughAttrs, propsOptions);
            }
            root = cloneVNode(root, fallthroughAttrs);
          }
          else if (true && !accessedAttrs && root.type !== Comment) {
            const allAttrs = Object.keys(attrs);
            const eventAttrs = [];
            const extraAttrs = [];
            for (let i = 0, l = allAttrs.length; i < l; i++) {
              const key = allAttrs[i];
              if (isOn(key)) {
                // ignore v-model handlers when they fail to fallthrough
                if (!isModelListener(key)) {
                  // remove `on`, lowercase first letter to reflect event casing
                  // accurately
                  eventAttrs.push(key[2].toLowerCase() + key.slice(3));
                }
              }
              else {
                extraAttrs.push(key);
              }
            }
            if (extraAttrs.length) {
              warn(`Extraneous non-props attributes (` +
                `${extraAttrs.join(', ')}) ` +
                `were passed to component but could not be automatically inherited ` +
                `because component renders fragment or text root nodes.`);
            }
            if (eventAttrs.length) {
              warn(`Extraneous non-emits event listeners (` +
                `${eventAttrs.join(', ')}) ` +
                `were passed to component but could not be automatically inherited ` +
                `because component renders fragment or text root nodes. ` +
                `If the listener is intended to be a component custom event listener only, ` +
                `declare it using the "emits" option.`);
            }
          }
        }
      }
      // inherit directives
      if (vnode.dirs) {
        if (true && !isElementRoot(root)) {
          warn(`Runtime directive used on component with non-element root node. ` +
            `The directives will not function as intended.`);
        }
        root.dirs = root.dirs ? root.dirs.concat(vnode.dirs) : vnode.dirs;
      }
      // inherit transition data
      if (vnode.transition) {
        if (true && !isElementRoot(root)) {
          warn(`Component inside <Transition> renders non-element root node ` +
            `that cannot be animated.`);
        }
        root.transition = vnode.transition;
      }
      if (true && setRoot) {
        setRoot(root);
      }
      else {
        result = root;
      }
    }
    catch (err) {
      blockStack.length = 0;
      handleError(err, instance, 1 /* RENDER_FUNCTION */);
      result = createVNode(Comment);
    }
    setCurrentRenderingInstance(prev);
    return result;
  }
  /**
   * dev only
   * In dev mode, template root level comments are rendered, which turns the
   * template into a fragment root, but we need to locate the single element
   * root for attrs and scope id processing.
   */
  const getChildRoot = (vnode) => {
    const rawChildren = vnode.children;
    const dynamicChildren = vnode.dynamicChildren;
    const childRoot = filterSingleRoot(rawChildren);
    if (!childRoot) {
      return [vnode, undefined];
    }
    const index = rawChildren.indexOf(childRoot);
    const dynamicIndex = dynamicChildren ? dynamicChildren.indexOf(childRoot) : -1;
    const setRoot = (updatedRoot) => {
      rawChildren[index] = updatedRoot;
      if (dynamicChildren) {
        if (dynamicIndex > -1) {
          dynamicChildren[dynamicIndex] = updatedRoot;
        }
        else if (updatedRoot.patchFlag > 0) {
          vnode.dynamicChildren = [...dynamicChildren, updatedRoot];
        }
      }
    };
    return [normalizeVNode(childRoot), setRoot];
  };
  function filterSingleRoot(children) {
    let singleRoot;
    for (let i = 0; i < children.length; i++) {
      const child = children[i];
      if (isVNode(child)) {
        // ignore user comment
        if (child.type !== Comment || child.children === 'v-if') {
          if (singleRoot) {
            // has more than 1 non-comment child, return now
            return;
          }
          else {
            singleRoot = child;
          }
        }
      }
      else {
        return;
      }
    }
    return singleRoot;
  }
  const getFunctionalFallthrough = (attrs) => {
    let res;
    for (const key in attrs) {
      if (key === 'class' || key === 'style' || isOn(key)) {
        (res || (res = {}))[key] = attrs[key];
      }
    }
    return res;
  };
  const filterModelListeners = (attrs, props) => {
    const res = {};
    for (const key in attrs) {
      if (!isModelListener(key) || !(key.slice(9) in props)) {
        res[key] = attrs[key];
      }
    }
    return res;
  };
  const isElementRoot = (vnode) => {
    return (vnode.shapeFlag & 6 /* COMPONENT */ ||
      vnode.shapeFlag & 1 /* ELEMENT */ ||
      vnode.type === Comment // potential v-if branch switch
    );
  };
  function shouldUpdateComponent(prevVNode, nextVNode, optimized) {
    const { props: prevProps, children: prevChildren, component } = prevVNode;
    const { props: nextProps, children: nextChildren, patchFlag } = nextVNode;
    const emits = component.emitsOptions;
    // Parent component's render function was hot-updated. Since this may have
    // caused the child component's slots content to have changed, we need to
    // force the child to update as well.
    if ((prevChildren || nextChildren) && isHmrUpdating) {
      return true;
    }
    // force child update for runtime directive or transition on component vnode.
    if (nextVNode.dirs || nextVNode.transition) {
      return true;
    }
    if (optimized && patchFlag >= 0) {
      if (patchFlag & 1024 /* DYNAMIC_SLOTS */) {
        // slot content that references values that might have changed,
        // e.g. in a v-for
        return true;
      }
      if (patchFlag & 16 /* FULL_PROPS */) {
        if (!prevProps) {
          return !!nextProps;
        }
        // presence of this flag indicates props are always non-null
        return hasPropsChanged(prevProps, nextProps, emits);
      }
      else if (patchFlag & 8 /* PROPS */) {
        const dynamicProps = nextVNode.dynamicProps;
        for (let i = 0; i < dynamicProps.length; i++) {
          const key = dynamicProps[i];
          if (nextProps[key] !== prevProps[key] &&
            !isEmitListener(emits, key)) {
            return true;
          }
        }
      }
    }
    else {
      // this path is only taken by manually written render functions
      // so presence of any children leads to a forced update
      if (prevChildren || nextChildren) {
        if (!nextChildren || !nextChildren.$stable) {
          return true;
        }
      }
      if (prevProps === nextProps) {
        return false;
      }
      if (!prevProps) {
        return !!nextProps;
      }
      if (!nextProps) {
        return true;
      }
      return hasPropsChanged(prevProps, nextProps, emits);
    }
    return false;
  }
  function hasPropsChanged(prevProps, nextProps, emitsOptions) {
    const nextKeys = Object.keys(nextProps);
    if (nextKeys.length !== Object.keys(prevProps).length) {
      return true;
    }
    for (let i = 0; i < nextKeys.length; i++) {
      const key = nextKeys[i];
      if (nextProps[key] !== prevProps[key] &&
        !isEmitListener(emitsOptions, key)) {
        return true;
      }
    }
    return false;
  }
  function updateHOCHostEl({ vnode, parent }, el // HostNode
  ) {
    while (parent && parent.subTree === vnode) {
      (vnode = parent.vnode).el = el;
      parent = parent.parent;
    }
  }

  const isSuspense = (type) => type.__isSuspense;
  // Suspense exposes a component-like API, and is treated like a component
  // in the compiler, but internally it's a special built-in type that hooks
  // directly into the renderer.
  const SuspenseImpl = {
    name: 'Suspense',
    // In order to make Suspense tree-shakable, we need to avoid importing it
    // directly in the renderer. The renderer checks for the __isSuspense flag
    // on a vnode's type and calls the `process` method, passing in renderer
    // internals.
    __isSuspense: true,
    process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized,
            // platform-specific impl passed from renderer
            rendererInternals) {
      if (n1 == null) {
        mountSuspense(n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals);
      }
      else {
        patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, rendererInternals);
      }
    },
    hydrate: hydrateSuspense,
    create: createSuspenseBoundary
  };
  // Force-casted public typing for h and TSX props inference
  const Suspense = (SuspenseImpl
  );
  function mountSuspense(vnode, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals) {
    const { p: patch, o: { createElement } } = rendererInternals;
    const hiddenContainer = createElement('div');
    const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, container, hiddenContainer, anchor, isSVG, slotScopeIds, optimized, rendererInternals));
    // start mounting the content subtree in an off-dom container
    patch(null, (suspense.pendingBranch = vnode.ssContent), hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds);
    // now check if we have encountered any async deps
    if (suspense.deps > 0) {
      // has async
      // mount the fallback tree
      patch(null, vnode.ssFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
        isSVG, slotScopeIds);
      setActiveBranch(suspense, vnode.ssFallback);
    }
    else {
      // Suspense has no async deps. Just resolve.
      suspense.resolve();
    }
  }
  function patchSuspense(n1, n2, container, anchor, parentComponent, isSVG, slotScopeIds, optimized, { p: patch, um: unmount, o: { createElement } }) {
    const suspense = (n2.suspense = n1.suspense);
    suspense.vnode = n2;
    n2.el = n1.el;
    const newBranch = n2.ssContent;
    const newFallback = n2.ssFallback;
    const { activeBranch, pendingBranch, isInFallback, isHydrating } = suspense;
    if (pendingBranch) {
      suspense.pendingBranch = newBranch;
      if (isSameVNodeType(newBranch, pendingBranch)) {
        // same root type but content may have changed.
        patch(pendingBranch, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
        if (suspense.deps <= 0) {
          suspense.resolve();
        }
        else if (isInFallback) {
          patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
            isSVG, slotScopeIds, optimized);
          setActiveBranch(suspense, newFallback);
        }
      }
      else {
        // toggled before pending tree is resolved
        suspense.pendingId++;
        if (isHydrating) {
          // if toggled before hydration is finished, the current DOM tree is
          // no longer valid. set it as the active branch so it will be unmounted
          // when resolved
          suspense.isHydrating = false;
          suspense.activeBranch = pendingBranch;
        }
        else {
          unmount(pendingBranch, parentComponent, suspense);
        }
        // increment pending ID. this is used to invalidate async callbacks
        // reset suspense state
        suspense.deps = 0;
        // discard effects from pending branch
        suspense.effects.length = 0;
        // discard previous container
        suspense.hiddenContainer = createElement('div');
        if (isInFallback) {
          // already in fallback state
          patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
          if (suspense.deps <= 0) {
            suspense.resolve();
          }
          else {
            patch(activeBranch, newFallback, container, anchor, parentComponent, null, // fallback tree will not have suspense context
              isSVG, slotScopeIds, optimized);
            setActiveBranch(suspense, newFallback);
          }
        }
        else if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
          // toggled "back" to current active branch
          patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG, slotScopeIds, optimized);
          // force resolve
          suspense.resolve(true);
        }
        else {
          // switched to a 3rd branch
          patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
          if (suspense.deps <= 0) {
            suspense.resolve();
          }
        }
      }
    }
    else {
      if (activeBranch && isSameVNodeType(newBranch, activeBranch)) {
        // root did not change, just normal patch
        patch(activeBranch, newBranch, container, anchor, parentComponent, suspense, isSVG, slotScopeIds, optimized);
        setActiveBranch(suspense, newBranch);
      }
      else {
        // root node toggled
        // invoke @pending event
        const onPending = n2.props && n2.props.onPending;
        if (isFunction(onPending)) {
          onPending();
        }
        // mount pending branch in off-dom container
        suspense.pendingBranch = newBranch;
        suspense.pendingId++;
        patch(null, newBranch, suspense.hiddenContainer, null, parentComponent, suspense, isSVG, slotScopeIds, optimized);
        if (suspense.deps <= 0) {
          // incoming branch has no async deps, resolve now.
          suspense.resolve();
        }
        else {
          const { timeout, pendingId } = suspense;
          if (timeout > 0) {
            setTimeout(() => {
              if (suspense.pendingId === pendingId) {
                suspense.fallback(newFallback);
              }
            }, timeout);
          }
          else if (timeout === 0) {
            suspense.fallback(newFallback);
          }
        }
      }
    }
  }
  let hasWarned = false;
  function createSuspenseBoundary(vnode, parent, parentComponent, container, hiddenContainer, anchor, isSVG, slotScopeIds, optimized, rendererInternals, isHydrating = false) {
    /* istanbul ignore if */
    if (!hasWarned) {
      hasWarned = true;
      // @ts-ignore `console.info` cannot be null error
      console[console.info ? 'info' : 'log'](`<Suspense> is an experimental feature and its API will likely change.`);
    }
    const { p: patch, m: move, um: unmount, n: next, o: { parentNode, remove } } = rendererInternals;
    const timeout = toNumber(vnode.props && vnode.props.timeout);
    const suspense = {
      vnode,
      parent,
      parentComponent,
      isSVG,
      container,
      hiddenContainer,
      anchor,
      deps: 0,
      pendingId: 0,
      timeout: typeof timeout === 'number' ? timeout : -1,
      activeBranch: null,
      pendingBranch: null,
      isInFallback: true,
      isHydrating,
      isUnmounted: false,
      effects: [],
      resolve(resume = false) {
        {
          if (!resume && !suspense.pendingBranch) {
            throw new Error(`suspense.resolve() is called without a pending branch.`);
          }
          if (suspense.isUnmounted) {
            throw new Error(`suspense.resolve() is called on an already unmounted suspense boundary.`);
          }
        }
        const { vnode, activeBranch, pendingBranch, pendingId, effects, parentComponent, container } = suspense;
        if (suspense.isHydrating) {
          suspense.isHydrating = false;
        }
        else if (!resume) {
          const delayEnter = activeBranch &&
            pendingBranch.transition &&
            pendingBranch.transition.mode === 'out-in';
          if (delayEnter) {
            activeBranch.transition.afterLeave = () => {
              if (pendingId === suspense.pendingId) {
                move(pendingBranch, container, anchor, 0 /* ENTER */);
              }
            };
          }
          // this is initial anchor on mount
          let { anchor } = suspense;
          // unmount current active tree
          if (activeBranch) {
            // if the fallback tree was mounted, it may have been moved
            // as part of a parent suspense. get the latest anchor for insertion
            anchor = next(activeBranch);
            unmount(activeBranch, parentComponent, suspense, true);
          }
          if (!delayEnter) {
            // move content from off-dom container to actual container
            move(pendingBranch, container, anchor, 0 /* ENTER */);
          }
        }
        setActiveBranch(suspense, pendingBranch);
        suspense.pendingBranch = null;
        suspense.isInFallback = false;
        // flush buffered effects
        // check if there is a pending parent suspense
        let parent = suspense.parent;
        let hasUnresolvedAncestor = false;
        while (parent) {
          if (parent.pendingBranch) {
            // found a pending parent suspense, merge buffered post jobs
            // into that parent
            parent.effects.push(...effects);
            hasUnresolvedAncestor = true;
            break;
          }
          parent = parent.parent;
        }
        // no pending parent suspense, flush all jobs
        if (!hasUnresolvedAncestor) {
          queuePostFlushCb(effects);
        }
        suspense.effects = [];
        // invoke @resolve event
        const onResolve = vnode.props && vnode.props.onResolve;
        if (isFunction(onResolve)) {
          onResolve();
        }
      },
      fallback(fallbackVNode) {
        if (!suspense.pendingBranch) {
          return;
        }
        const { vnode, activeBranch, parentComponent, container, isSVG } = suspense;
        // invoke @fallback event
        const onFallback = vnode.props && vnode.props.onFallback;
        if (isFunction(onFallback)) {
          onFallback();
        }
        const anchor = next(activeBranch);
        const mountFallback = () => {
          if (!suspense.isInFallback) {
            return;
          }
          // mount the fallback tree
          patch(null, fallbackVNode, container, anchor, parentComponent, null, // fallback tree will not have suspense context
            isSVG, slotScopeIds, optimized);
          setActiveBranch(suspense, fallbackVNode);
        };
        const delayEnter = fallbackVNode.transition && fallbackVNode.transition.mode === 'out-in';
        if (delayEnter) {
          activeBranch.transition.afterLeave = mountFallback;
        }
        // unmount current active branch
        unmount(activeBranch, parentComponent, null, // no suspense so unmount hooks fire now
          true // shouldRemove
        );
        suspense.isInFallback = true;
        if (!delayEnter) {
          mountFallback();
        }
      },
      move(container, anchor, type) {
        suspense.activeBranch &&
        move(suspense.activeBranch, container, anchor, type);
        suspense.container = container;
      },
      next() {
        return suspense.activeBranch && next(suspense.activeBranch);
      },
      registerDep(instance, setupRenderEffect) {
        const isInPendingSuspense = !!suspense.pendingBranch;
        if (isInPendingSuspense) {
          suspense.deps++;
        }
        const hydratedEl = instance.vnode.el;
        instance
          .asyncDep.catch(err => {
          handleError(err, instance, 0 /* SETUP_FUNCTION */);
        })
          .then(asyncSetupResult => {
            // retry when the setup() promise resolves.
            // component may have been unmounted before resolve.
            if (instance.isUnmounted ||
              suspense.isUnmounted ||
              suspense.pendingId !== instance.suspenseId) {
              return;
            }
            // retry from this component
            instance.asyncResolved = true;
            const { vnode } = instance;
            {
              pushWarningContext(vnode);
            }
            handleSetupResult(instance, asyncSetupResult, false);
            if (hydratedEl) {
              // vnode may have been replaced if an update happened before the
              // async dep is resolved.
              vnode.el = hydratedEl;
            }
            const placeholder = !hydratedEl && instance.subTree.el;
            setupRenderEffect(instance, vnode,
              // component may have been moved before resolve.
              // if this is not a hydration, instance.subTree will be the comment
              // placeholder.
              parentNode(hydratedEl || instance.subTree.el),
              // anchor will not be used if this is hydration, so only need to
              // consider the comment placeholder case.
              hydratedEl ? null : next(instance.subTree), suspense, isSVG, optimized);
            if (placeholder) {
              remove(placeholder);
            }
            updateHOCHostEl(instance, vnode.el);
            {
              popWarningContext();
            }
            // only decrease deps count if suspense is not already resolved
            if (isInPendingSuspense && --suspense.deps === 0) {
              suspense.resolve();
            }
          });
      },
      unmount(parentSuspense, doRemove) {
        suspense.isUnmounted = true;
        if (suspense.activeBranch) {
          unmount(suspense.activeBranch, parentComponent, parentSuspense, doRemove);
        }
        if (suspense.pendingBranch) {
          unmount(suspense.pendingBranch, parentComponent, parentSuspense, doRemove);
        }
      }
    };
    return suspense;
  }
  function hydrateSuspense(node, vnode, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, rendererInternals, hydrateNode) {
    /* eslint-disable no-restricted-globals */
    const suspense = (vnode.suspense = createSuspenseBoundary(vnode, parentSuspense, parentComponent, node.parentNode, document.createElement('div'), null, isSVG, slotScopeIds, optimized, rendererInternals, true /* hydrating */));
    // there are two possible scenarios for server-rendered suspense:
    // - success: ssr content should be fully resolved
    // - failure: ssr content should be the fallback branch.
    // however, on the client we don't really know if it has failed or not
    // attempt to hydrate the DOM assuming it has succeeded, but we still
    // need to construct a suspense boundary first
    const result = hydrateNode(node, (suspense.pendingBranch = vnode.ssContent), parentComponent, suspense, slotScopeIds, optimized);
    if (suspense.deps === 0) {
      suspense.resolve();
    }
    return result;
    /* eslint-enable no-restricted-globals */
  }
  function normalizeSuspenseChildren(vnode) {
    const { shapeFlag, children } = vnode;
    let content;
    let fallback;
    if (shapeFlag & 32 /* SLOTS_CHILDREN */) {
      content = normalizeSuspenseSlot(children.default);
      fallback = normalizeSuspenseSlot(children.fallback);
    }
    else {
      content = normalizeSuspenseSlot(children);
      fallback = normalizeVNode(null);
    }
    return {
      content,
      fallback
    };
  }
  function normalizeSuspenseSlot(s) {
    if (isFunction(s)) {
      s = s();
    }
    if (isArray(s)) {
      const singleChild = filterSingleRoot(s);
      if (!singleChild) {
        warn(`<Suspense> slots expect a single root node.`);
      }
      s = singleChild;
    }
    return normalizeVNode(s);
  }
  function queueEffectWithSuspense(fn, suspense) {
    if (suspense && suspense.pendingBranch) {
      if (isArray(fn)) {
        suspense.effects.push(...fn);
      }
      else {
        suspense.effects.push(fn);
      }
    }
    else {
      queuePostFlushCb(fn);
    }
  }
  function setActiveBranch(suspense, branch) {
    suspense.activeBranch = branch;
    const { vnode, parentComponent } = suspense;
    const el = (vnode.el = branch.el);
    // in case suspense is the root node of a component,
    // recursively update the HOC el
    if (parentComponent && parentComponent.subTree === vnode) {
      parentComponent.vnode.el = el;
      updateHOCHostEl(parentComponent, el);
    }
  }

  function initProps(instance, rawProps, isStateful, // result of bitwise flag comparison
                     isSSR = false) {
    const props = {};
    const attrs = {};
    def(attrs, InternalObjectKey, 1);
    instance.propsDefaults = Object.create(null);
    setFullProps(instance, rawProps, props, attrs);
    // validation
    {
      validateProps(rawProps || {}, props, instance);
    }
    if (isStateful) {
      // stateful
      instance.props = isSSR ? props : shallowReactive(props);
    }
    else {
      if (!instance.type.props) {
        // functional w/ optional props, props === attrs
        instance.props = attrs;
      }
      else {
        // functional w/ declared props
        instance.props = props;
      }
    }
    instance.attrs = attrs;
  }
  function updateProps(instance, rawProps, rawPrevProps, optimized) {
    const { props, attrs, vnode: { patchFlag } } = instance;
    const rawCurrentProps = toRaw(props);
    const [options] = instance.propsOptions;
    if (
      // always force full diff in dev
      // - #1942 if hmr is enabled with sfc component
      // - vite#872 non-sfc component used by sfc component
      !((instance.type.__hmrId ||
        (instance.parent && instance.parent.type.__hmrId))) &&
      (optimized || patchFlag > 0) &&
      !(patchFlag & 16 /* FULL_PROPS */)) {
      if (patchFlag & 8 /* PROPS */) {
        // Compiler-generated props & no keys change, just set the updated
        // the props.
        const propsToUpdate = instance.vnode.dynamicProps;
        for (let i = 0; i < propsToUpdate.length; i++) {
          const key = propsToUpdate[i];
          // PROPS flag guarantees rawProps to be non-null
          const value = rawProps[key];
          if (options) {
            // attr / props separation was done on init and will be consistent
            // in this code path, so just check if attrs have it.
            if (hasOwn(attrs, key)) {
              attrs[key] = value;
            }
            else {
              const camelizedKey = camelize(key);
              props[camelizedKey] = resolvePropValue(options, rawCurrentProps, camelizedKey, value, instance);
            }
          }
          else {
            attrs[key] = value;
          }
        }
      }
    }
    else {
      // full props update.
      setFullProps(instance, rawProps, props, attrs);
      // in case of dynamic props, check if we need to delete keys from
      // the props object
      let kebabKey;
      for (const key in rawCurrentProps) {
        if (!rawProps ||
          // for camelCase
          (!hasOwn(rawProps, key) &&
            // it's possible the original props was passed in as kebab-case
            // and converted to camelCase (#955)
            ((kebabKey = hyphenate(key)) === key || !hasOwn(rawProps, kebabKey)))) {
          if (options) {
            if (rawPrevProps &&
              // for camelCase
              (rawPrevProps[key] !== undefined ||
                // for kebab-case
                rawPrevProps[kebabKey] !== undefined)) {
              props[key] = resolvePropValue(options, rawProps || EMPTY_OBJ, key, undefined, instance);
            }
          }
          else {
            delete props[key];
          }
        }
      }
      // in the case of functional component w/o props declaration, props and
      // attrs point to the same object so it should already have been updated.
      if (attrs !== rawCurrentProps) {
        for (const key in attrs) {
          if (!rawProps || !hasOwn(rawProps, key)) {
            delete attrs[key];
          }
        }
      }
    }
    // trigger updates for $attrs in case it's used in component slots
    trigger(instance, "set" /* SET */, '$attrs');
    {
      validateProps(rawProps || {}, props, instance);
    }
  }
  function setFullProps(instance, rawProps, props, attrs) {
    const [options, needCastKeys] = instance.propsOptions;
    if (rawProps) {
      for (const key in rawProps) {
        const value = rawProps[key];
        // key, ref are reserved and never passed down
        if (isReservedProp(key)) {
          continue;
        }
        // prop option names are camelized during normalization, so to support
        // kebab -> camel conversion here we need to camelize the key.
        let camelKey;
        if (options && hasOwn(options, (camelKey = camelize(key)))) {
          props[camelKey] = value;
        }
        else if (!isEmitListener(instance.emitsOptions, key)) {
          // Any non-declared (either as a prop or an emitted event) props are put
          // into a separate `attrs` object for spreading. Make sure to preserve
          // original key casing
          attrs[key] = value;
        }
      }
    }
    if (needCastKeys) {
      const rawCurrentProps = toRaw(props);
      for (let i = 0; i < needCastKeys.length; i++) {
        const key = needCastKeys[i];
        props[key] = resolvePropValue(options, rawCurrentProps, key, rawCurrentProps[key], instance);
      }
    }
  }
  function resolvePropValue(options, props, key, value, instance) {
    const opt = options[key];
    if (opt != null) {
      const hasDefault = hasOwn(opt, 'default');
      // default values
      if (hasDefault && value === undefined) {
        const defaultValue = opt.default;
        if (opt.type !== Function && isFunction(defaultValue)) {
          const { propsDefaults } = instance;
          if (key in propsDefaults) {
            value = propsDefaults[key];
          }
          else {
            setCurrentInstance(instance);
            value = propsDefaults[key] = defaultValue(props);
            setCurrentInstance(null);
          }
        }
        else {
          value = defaultValue;
        }
      }
      // boolean casting
      if (opt[0 /* shouldCast */]) {
        if (!hasOwn(props, key) && !hasDefault) {
          value = false;
        }
        else if (opt[1 /* shouldCastTrue */] &&
          (value === '' || value === hyphenate(key))) {
          value = true;
        }
      }
    }
    return value;
  }
  function normalizePropsOptions(comp, appContext, asMixin = false) {
    if (!appContext.deopt && comp.__props) {
      return comp.__props;
    }
    const raw = comp.props;
    const normalized = {};
    const needCastKeys = [];
    // apply mixin/extends props
    let hasExtends = false;
    if (!isFunction(comp)) {
      const extendProps = (raw) => {
        hasExtends = true;
        const [props, keys] = normalizePropsOptions(raw, appContext, true);
        extend(normalized, props);
        if (keys)
          needCastKeys.push(...keys);
      };
      if (!asMixin && appContext.mixins.length) {
        appContext.mixins.forEach(extendProps);
      }
      if (comp.extends) {
        extendProps(comp.extends);
      }
      if (comp.mixins) {
        comp.mixins.forEach(extendProps);
      }
    }
    if (!raw && !hasExtends) {
      return (comp.__props = EMPTY_ARR);
    }
    if (isArray(raw)) {
      for (let i = 0; i < raw.length; i++) {
        if (!isString(raw[i])) {
          warn(`props must be strings when using array syntax.`, raw[i]);
        }
        const normalizedKey = camelize(raw[i]);
        if (validatePropName(normalizedKey)) {
          normalized[normalizedKey] = EMPTY_OBJ;
        }
      }
    }
    else if (raw) {
      if (!isObject(raw)) {
        warn(`invalid props options`, raw);
      }
      for (const key in raw) {
        const normalizedKey = camelize(key);
        if (validatePropName(normalizedKey)) {
          const opt = raw[key];
          const prop = (normalized[normalizedKey] =
            isArray(opt) || isFunction(opt) ? { type: opt } : opt);
          if (prop) {
            const booleanIndex = getTypeIndex(Boolean, prop.type);
            const stringIndex = getTypeIndex(String, prop.type);
            prop[0 /* shouldCast */] = booleanIndex > -1;
            prop[1 /* shouldCastTrue */] =
              stringIndex < 0 || booleanIndex < stringIndex;
            // if the prop needs boolean casting or default value
            if (booleanIndex > -1 || hasOwn(prop, 'default')) {
              needCastKeys.push(normalizedKey);
            }
          }
        }
      }
    }
    return (comp.__props = [normalized, needCastKeys]);
  }
  function validatePropName(key) {
    if (key[0] !== '$') {
      return true;
    }
    else {
      warn(`Invalid prop name: "${key}" is a reserved property.`);
    }
    return false;
  }
  // use function string name to check type constructors
  // so that it works across vms / iframes.
  function getType(ctor) {
    const match = ctor && ctor.toString().match(/^\s*function (\w+)/);
    return match ? match[1] : '';
  }
  function isSameType(a, b) {
    return getType(a) === getType(b);
  }
  function getTypeIndex(type, expectedTypes) {
    if (isArray(expectedTypes)) {
      return expectedTypes.findIndex(t => isSameType(t, type));
    }
    else if (isFunction(expectedTypes)) {
      return isSameType(expectedTypes, type) ? 0 : -1;
    }
    return -1;
  }
  /**
   * dev only
   */
  function validateProps(rawProps, props, instance) {
    const resolvedValues = toRaw(props);
    const options = instance.propsOptions[0];
    for (const key in options) {
      let opt = options[key];
      if (opt == null)
        continue;
      validateProp(key, resolvedValues[key], opt, !hasOwn(rawProps, key) && !hasOwn(rawProps, hyphenate(key)));
    }
  }
  /**
   * dev only
   */
  function validateProp(name, value, prop, isAbsent) {
    const { type, required, validator } = prop;
    // required!
    if (required && isAbsent) {
      warn('Missing required prop: "' + name + '"');
      return;
    }
    // missing but optional
    if (value == null && !prop.required) {
      return;
    }
    // type check
    if (type != null && type !== true) {
      let isValid = false;
      const types = isArray(type) ? type : [type];
      const expectedTypes = [];
      // value is valid as long as one of the specified types match
      for (let i = 0; i < types.length && !isValid; i++) {
        const { valid, expectedType } = assertType(value, types[i]);
        expectedTypes.push(expectedType || '');
        isValid = valid;
      }
      if (!isValid) {
        warn(getInvalidTypeMessage(name, value, expectedTypes));
        return;
      }
    }
    // custom validator
    if (validator && !validator(value)) {
      warn('Invalid prop: custom validator check failed for prop "' + name + '".');
    }
  }
  const isSimpleType = /*#__PURE__*/ makeMap('String,Number,Boolean,Function,Symbol,BigInt');
  /**
   * dev only
   */
  function assertType(value, type) {
    let valid;
    const expectedType = getType(type);
    if (isSimpleType(expectedType)) {
      const t = typeof value;
      valid = t === expectedType.toLowerCase();
      // for primitive wrapper objects
      if (!valid && t === 'object') {
        valid = value instanceof type;
      }
    }
    else if (expectedType === 'Object') {
      valid = isObject(value);
    }
    else if (expectedType === 'Array') {
      valid = isArray(value);
    }
    else {
      valid = value instanceof type;
    }
    return {
      valid,
      expectedType
    };
  }
  /**
   * dev only
   */
  function getInvalidTypeMessage(name, value, expectedTypes) {
    let message = `Invalid prop: type check failed for prop "${name}".` +
      ` Expected ${expectedTypes.map(capitalize).join(', ')}`;
    const expectedType = expectedTypes[0];
    const receivedType = toRawType(value);
    const expectedValue = styleValue(value, expectedType);
    const receivedValue = styleValue(value, receivedType);
    // check if we need to specify expected value
    if (expectedTypes.length === 1 &&
      isExplicable(expectedType) &&
      !isBoolean(expectedType, receivedType)) {
      message += ` with value ${expectedValue}`;
    }
    message += `, got ${receivedType} `;
    // check if we need to specify received value
    if (isExplicable(receivedType)) {
      message += `with value ${receivedValue}.`;
    }
    return message;
  }
  /**
   * dev only
   */
  function styleValue(value, type) {
    if (type === 'String') {
      return `"${value}"`;
    }
    else if (type === 'Number') {
      return `${Number(value)}`;
    }
    else {
      return `${value}`;
    }
  }
  /**
   * dev only
   */
  function isExplicable(type) {
    const explicitTypes = ['string', 'number', 'boolean'];
    return explicitTypes.some(elem => type.toLowerCase() === elem);
  }
  /**
   * dev only
   */
  function isBoolean(...args) {
    return args.some(elem => elem.toLowerCase() === 'boolean');
  }

  function injectHook(type, hook, target = currentInstance, prepend = false) {
    if (target) {
      const hooks = target[type] || (target[type] = []);
      // cache the error handling wrapper for injected hooks so the same hook
      // can be properly deduped by the scheduler. "__weh" stands for "with error
      // handling".
      const wrappedHook = hook.__weh ||
        (hook.__weh = (...args) => {
          if (target.isUnmounted) {
            return;
          }
          // disable tracking inside all lifecycle hooks
          // since they can potentially be called inside effects.
          pauseTracking();
          // Set currentInstance during hook invocation.
          // This assumes the hook does not synchronously trigger other hooks, which
          // can only be false when the user does something really funky.
          setCurrentInstance(target);
          const res = callWithAsyncErrorHandling(hook, target, type, args);
          setCurrentInstance(null);
          resetTracking();
          return res;
        });
      if (prepend) {
        hooks.unshift(wrappedHook);
      }
      else {
        hooks.push(wrappedHook);
      }
      return wrappedHook;
    }
    else {
      const apiName = toHandlerKey(ErrorTypeStrings[type].replace(/ hook$/, ''));
      warn(`${apiName} is called when there is no active component instance to be ` +
        `associated with. ` +
        `Lifecycle injection APIs can only be used during execution of setup().` +
        (` If you are using async setup(), make sure to register lifecycle ` +
          `hooks before the first await statement.`
        ));
    }
  }
  const createHook = (lifecycle) => (hook, target = currentInstance) =>
    // post-create lifecycle registrations are noops during SSR
    !isInSSRComponentSetup && injectHook(lifecycle, hook, target);
  const onBeforeMount = createHook("bm" /* BEFORE_MOUNT */);
  const onMounted = createHook("m" /* MOUNTED */);
  const onBeforeUpdate = createHook("bu" /* BEFORE_UPDATE */);
  const onUpdated = createHook("u" /* UPDATED */);
  const onBeforeUnmount = createHook("bum" /* BEFORE_UNMOUNT */);
  const onUnmounted = createHook("um" /* UNMOUNTED */);
  const onRenderTriggered = createHook("rtg" /* RENDER_TRIGGERED */);
  const onRenderTracked = createHook("rtc" /* RENDER_TRACKED */);
  const onErrorCaptured = (hook, target = currentInstance) => {
    injectHook("ec" /* ERROR_CAPTURED */, hook, target);
  };

  // Simple effect.
  function watchEffect(effect, options) {
    return doWatch(effect, null, options);
  }
  // initial value for watchers to trigger on undefined initial values
  const INITIAL_WATCHER_VALUE = {};
  // implementation
  function watch(source, cb, options) {
    if (!isFunction(cb)) {
      warn(`\`watch(fn, options?)\` signature has been moved to a separate API. ` +
        `Use \`watchEffect(fn, options?)\` instead. \`watch\` now only ` +
        `supports \`watch(source, cb, options?) signature.`);
    }
    return doWatch(source, cb, options);
  }
  function doWatch(source, cb, { immediate, deep, flush, onTrack, onTrigger } = EMPTY_OBJ, instance = currentInstance) {
    if (!cb) {
      if (immediate !== undefined) {
        warn(`watch() "immediate" option is only respected when using the ` +
          `watch(source, callback, options?) signature.`);
      }
      if (deep !== undefined) {
        warn(`watch() "deep" option is only respected when using the ` +
          `watch(source, callback, options?) signature.`);
      }
    }
    const warnInvalidSource = (s) => {
      warn(`Invalid watch source: `, s, `A watch source can only be a getter/effect function, a ref, ` +
        `a reactive object, or an array of these types.`);
    };
    let getter;
    let forceTrigger = false;
    if (isRef(source)) {
      getter = () => source.value;
      forceTrigger = !!source._shallow;
    }
    else if (isReactive(source)) {
      getter = () => source;
      deep = true;
    }
    else if (isArray(source)) {
      getter = () => source.map(s => {
        if (isRef(s)) {
          return s.value;
        }
        else if (isReactive(s)) {
          return traverse(s);
        }
        else if (isFunction(s)) {
          return callWithErrorHandling(s, instance, 2 /* WATCH_GETTER */, [
            instance && instance.proxy
          ]);
        }
        else {
          warnInvalidSource(s);
        }
      });
    }
    else if (isFunction(source)) {
      if (cb) {
        // getter with cb
        getter = () => callWithErrorHandling(source, instance, 2 /* WATCH_GETTER */, [
          instance && instance.proxy
        ]);
      }
      else {
        // no cb -> simple effect
        getter = () => {
          if (instance && instance.isUnmounted) {
            return;
          }
          if (cleanup) {
            cleanup();
          }
          return callWithAsyncErrorHandling(source, instance, 3 /* WATCH_CALLBACK */, [onInvalidate]);
        };
      }
    }
    else {
      getter = NOOP;
      warnInvalidSource(source);
    }
    if (cb && deep) {
      const baseGetter = getter;
      getter = () => traverse(baseGetter());
    }
    let cleanup;
    let onInvalidate = (fn) => {
      cleanup = runner.options.onStop = () => {
        callWithErrorHandling(fn, instance, 4 /* WATCH_CLEANUP */);
      };
    };
    let oldValue = isArray(source) ? [] : INITIAL_WATCHER_VALUE;
    const job = () => {
      if (!runner.active) {
        return;
      }
      if (cb) {
        // watch(source, cb)
        const newValue = runner();
        if (deep || forceTrigger || hasChanged(newValue, oldValue)) {
          // cleanup before running cb again
          if (cleanup) {
            cleanup();
          }
          callWithAsyncErrorHandling(cb, instance, 3 /* WATCH_CALLBACK */, [
            newValue,
            // pass undefined as the old value when it's changed for the first time
            oldValue === INITIAL_WATCHER_VALUE ? undefined : oldValue,
            onInvalidate
          ]);
          oldValue = newValue;
        }
      }
      else {
        // watchEffect
        runner();
      }
    };
    // important: mark the job as a watcher callback so that scheduler knows
    // it is allowed to self-trigger (#1727)
    job.allowRecurse = !!cb;
    let scheduler;
    if (flush === 'sync') {
      scheduler = job;
    }
    else if (flush === 'post') {
      scheduler = () => queuePostRenderEffect(job, instance && instance.suspense);
    }
    else {
      // default: 'pre'
      scheduler = () => {
        if (!instance || instance.isMounted) {
          queuePreFlushCb(job);
        }
        else {
          // with 'pre' option, the first call must happen before
          // the component is mounted so it is called synchronously.
          job();
        }
      };
    }
    const runner = effect(getter, {
      lazy: true,
      onTrack,
      onTrigger,
      scheduler
    });
    recordInstanceBoundEffect(runner, instance);
    // initial run
    if (cb) {
      if (immediate) {
        job();
      }
      else {
        oldValue = runner();
      }
    }
    else if (flush === 'post') {
      queuePostRenderEffect(runner, instance && instance.suspense);
    }
    else {
      runner();
    }
    return () => {
      stop(runner);
      if (instance) {
        remove(instance.effects, runner);
      }
    };
  }
  // this.$watch
  function instanceWatch(source, cb, options) {
    const publicThis = this.proxy;
    const getter = isString(source)
      ? () => publicThis[source]
      : source.bind(publicThis);
    return doWatch(getter, cb.bind(publicThis), options, this);
  }
  function traverse(value, seen = new Set()) {
    if (!isObject(value) || seen.has(value)) {
      return value;
    }
    seen.add(value);
    if (isRef(value)) {
      traverse(value.value, seen);
    }
    else if (isArray(value)) {
      for (let i = 0; i < value.length; i++) {
        traverse(value[i], seen);
      }
    }
    else if (isSet(value) || isMap(value)) {
      value.forEach((v) => {
        traverse(v, seen);
      });
    }
    else {
      for (const key in value) {
        traverse(value[key], seen);
      }
    }
    return value;
  }

  function useTransitionState() {
    const state = {
      isMounted: false,
      isLeaving: false,
      isUnmounting: false,
      leavingVNodes: new Map()
    };
    onMounted(() => {
      state.isMounted = true;
    });
    onBeforeUnmount(() => {
      state.isUnmounting = true;
    });
    return state;
  }
  const TransitionHookValidator = [Function, Array];
  const BaseTransitionImpl = {
    name: `BaseTransition`,
    props: {
      mode: String,
      appear: Boolean,
      persisted: Boolean,
      // enter
      onBeforeEnter: TransitionHookValidator,
      onEnter: TransitionHookValidator,
      onAfterEnter: TransitionHookValidator,
      onEnterCancelled: TransitionHookValidator,
      // leave
      onBeforeLeave: TransitionHookValidator,
      onLeave: TransitionHookValidator,
      onAfterLeave: TransitionHookValidator,
      onLeaveCancelled: TransitionHookValidator,
      // appear
      onBeforeAppear: TransitionHookValidator,
      onAppear: TransitionHookValidator,
      onAfterAppear: TransitionHookValidator,
      onAppearCancelled: TransitionHookValidator
    },
    setup(props, { slots }) {
      const instance = getCurrentInstance();
      const state = useTransitionState();
      let prevTransitionKey;
      return () => {
        const children = slots.default && getTransitionRawChildren(slots.default(), true);
        if (!children || !children.length) {
          return;
        }
        // warn multiple elements
        if (children.length > 1) {
          warn('<transition> can only be used on a single element or component. Use ' +
            '<transition-group> for lists.');
        }
        // there's no need to track reactivity for these props so use the raw
        // props for a bit better perf
        const rawProps = toRaw(props);
        const { mode } = rawProps;
        // check mode
        if (mode && !['in-out', 'out-in', 'default'].includes(mode)) {
          warn(`invalid <transition> mode: ${mode}`);
        }
        // at this point children has a guaranteed length of 1.
        const child = children[0];
        if (state.isLeaving) {
          return emptyPlaceholder(child);
        }
        // in the case of <transition><keep-alive/></transition>, we need to
        // compare the type of the kept-alive children.
        const innerChild = getKeepAliveChild(child);
        if (!innerChild) {
          return emptyPlaceholder(child);
        }
        const enterHooks = resolveTransitionHooks(innerChild, rawProps, state, instance);
        setTransitionHooks(innerChild, enterHooks);
        const oldChild = instance.subTree;
        const oldInnerChild = oldChild && getKeepAliveChild(oldChild);
        let transitionKeyChanged = false;
        const { getTransitionKey } = innerChild.type;
        if (getTransitionKey) {
          const key = getTransitionKey();
          if (prevTransitionKey === undefined) {
            prevTransitionKey = key;
          }
          else if (key !== prevTransitionKey) {
            prevTransitionKey = key;
            transitionKeyChanged = true;
          }
        }
        // handle mode
        if (oldInnerChild &&
          oldInnerChild.type !== Comment &&
          (!isSameVNodeType(innerChild, oldInnerChild) || transitionKeyChanged)) {
          const leavingHooks = resolveTransitionHooks(oldInnerChild, rawProps, state, instance);
          // update old tree's hooks in case of dynamic transition
          setTransitionHooks(oldInnerChild, leavingHooks);
          // switching between different views
          if (mode === 'out-in') {
            state.isLeaving = true;
            // return placeholder node and queue update when leave finishes
            leavingHooks.afterLeave = () => {
              state.isLeaving = false;
              instance.update();
            };
            return emptyPlaceholder(child);
          }
          else if (mode === 'in-out' && innerChild.type !== Comment) {
            leavingHooks.delayLeave = (el, earlyRemove, delayedLeave) => {
              const leavingVNodesCache = getLeavingNodesForType(state, oldInnerChild);
              leavingVNodesCache[String(oldInnerChild.key)] = oldInnerChild;
              // early removal callback
              el._leaveCb = () => {
                earlyRemove();
                el._leaveCb = undefined;
                delete enterHooks.delayedLeave;
              };
              enterHooks.delayedLeave = delayedLeave;
            };
          }
        }
        return child;
      };
    }
  };
  // export the public type for h/tsx inference
  // also to avoid inline import() in generated d.ts files
  const BaseTransition = BaseTransitionImpl;
  function getLeavingNodesForType(state, vnode) {
    const { leavingVNodes } = state;
    let leavingVNodesCache = leavingVNodes.get(vnode.type);
    if (!leavingVNodesCache) {
      leavingVNodesCache = Object.create(null);
      leavingVNodes.set(vnode.type, leavingVNodesCache);
    }
    return leavingVNodesCache;
  }
  // The transition hooks are attached to the vnode as vnode.transition
  // and will be called at appropriate timing in the renderer.
  function resolveTransitionHooks(vnode, props, state, instance) {
    const { appear, mode, persisted = false, onBeforeEnter, onEnter, onAfterEnter, onEnterCancelled, onBeforeLeave, onLeave, onAfterLeave, onLeaveCancelled, onBeforeAppear, onAppear, onAfterAppear, onAppearCancelled } = props;
    const key = String(vnode.key);
    const leavingVNodesCache = getLeavingNodesForType(state, vnode);
    const callHook = (hook, args) => {
      hook &&
      callWithAsyncErrorHandling(hook, instance, 9 /* TRANSITION_HOOK */, args);
    };
    const hooks = {
      mode,
      persisted,
      beforeEnter(el) {
        let hook = onBeforeEnter;
        if (!state.isMounted) {
          if (appear) {
            hook = onBeforeAppear || onBeforeEnter;
          }
          else {
            return;
          }
        }
        // for same element (v-show)
        if (el._leaveCb) {
          el._leaveCb(true /* cancelled */);
        }
        // for toggled element with same key (v-if)
        const leavingVNode = leavingVNodesCache[key];
        if (leavingVNode &&
          isSameVNodeType(vnode, leavingVNode) &&
          leavingVNode.el._leaveCb) {
          // force early removal (not cancelled)
          leavingVNode.el._leaveCb();
        }
        callHook(hook, [el]);
      },
      enter(el) {
        let hook = onEnter;
        let afterHook = onAfterEnter;
        let cancelHook = onEnterCancelled;
        if (!state.isMounted) {
          if (appear) {
            hook = onAppear || onEnter;
            afterHook = onAfterAppear || onAfterEnter;
            cancelHook = onAppearCancelled || onEnterCancelled;
          }
          else {
            return;
          }
        }
        let called = false;
        const done = (el._enterCb = (cancelled) => {
          if (called)
            return;
          called = true;
          if (cancelled) {
            callHook(cancelHook, [el]);
          }
          else {
            callHook(afterHook, [el]);
          }
          if (hooks.delayedLeave) {
            hooks.delayedLeave();
          }
          el._enterCb = undefined;
        });
        if (hook) {
          hook(el, done);
          if (hook.length <= 1) {
            done();
          }
        }
        else {
          done();
        }
      },
      leave(el, remove) {
        const key = String(vnode.key);
        if (el._enterCb) {
          el._enterCb(true /* cancelled */);
        }
        if (state.isUnmounting) {
          return remove();
        }
        callHook(onBeforeLeave, [el]);
        let called = false;
        const done = (el._leaveCb = (cancelled) => {
          if (called)
            return;
          called = true;
          remove();
          if (cancelled) {
            callHook(onLeaveCancelled, [el]);
          }
          else {
            callHook(onAfterLeave, [el]);
          }
          el._leaveCb = undefined;
          if (leavingVNodesCache[key] === vnode) {
            delete leavingVNodesCache[key];
          }
        });
        leavingVNodesCache[key] = vnode;
        if (onLeave) {
          onLeave(el, done);
          if (onLeave.length <= 1) {
            done();
          }
        }
        else {
          done();
        }
      },
      clone(vnode) {
        return resolveTransitionHooks(vnode, props, state, instance);
      }
    };
    return hooks;
  }
  // the placeholder really only handles one special case: KeepAlive
  // in the case of a KeepAlive in a leave phase we need to return a KeepAlive
  // placeholder with empty content to avoid the KeepAlive instance from being
  // unmounted.
  function emptyPlaceholder(vnode) {
    if (isKeepAlive(vnode)) {
      vnode = cloneVNode(vnode);
      vnode.children = null;
      return vnode;
    }
  }
  function getKeepAliveChild(vnode) {
    return isKeepAlive(vnode)
      ? vnode.children
        ? vnode.children[0]
        : undefined
      : vnode;
  }
  function setTransitionHooks(vnode, hooks) {
    if (vnode.shapeFlag & 6 /* COMPONENT */ && vnode.component) {
      setTransitionHooks(vnode.component.subTree, hooks);
    }
    else if (vnode.shapeFlag & 128 /* SUSPENSE */) {
      vnode.ssContent.transition = hooks.clone(vnode.ssContent);
      vnode.ssFallback.transition = hooks.clone(vnode.ssFallback);
    }
    else {
      vnode.transition = hooks;
    }
  }
  function getTransitionRawChildren(children, keepComment = false) {
    let ret = [];
    let keyedFragmentCount = 0;
    for (let i = 0; i < children.length; i++) {
      const child = children[i];
      // handle fragment children case, e.g. v-for
      if (child.type === Fragment) {
        if (child.patchFlag & 128 /* KEYED_FRAGMENT */)
          keyedFragmentCount++;
        ret = ret.concat(getTransitionRawChildren(child.children, keepComment));
      }
      // comment placeholders should be skipped, e.g. v-if
      else if (keepComment || child.type !== Comment) {
        ret.push(child);
      }
    }
    // #1126 if a transition children list contains multiple sub fragments, these
    // fragments will be merged into a flat children array. Since each v-for
    // fragment may contain different static bindings inside, we need to de-op
    // these children to force full diffs to ensure correct behavior.
    if (keyedFragmentCount > 1) {
      for (let i = 0; i < ret.length; i++) {
        ret[i].patchFlag = -2 /* BAIL */;
      }
    }
    return ret;
  }

  const isKeepAlive = (vnode) => vnode.type.__isKeepAlive;
  const KeepAliveImpl = {
    name: `KeepAlive`,
    // Marker for special handling inside the renderer. We are not using a ===
    // check directly on KeepAlive in the renderer, because importing it directly
    // would prevent it from being tree-shaken.
    __isKeepAlive: true,
    props: {
      include: [String, RegExp, Array],
      exclude: [String, RegExp, Array],
      max: [String, Number]
    },
    setup(props, { slots }) {
      const instance = getCurrentInstance();
      // KeepAlive communicates with the instantiated renderer via the
      // ctx where the renderer passes in its internals,
      // and the KeepAlive instance exposes activate/deactivate implementations.
      // The whole point of this is to avoid importing KeepAlive directly in the
      // renderer to facilitate tree-shaking.
      const sharedContext = instance.ctx;
      // if the internal renderer is not registered, it indicates that this is server-side rendering,
      // for KeepAlive, we just need to render its children
      if (!sharedContext.renderer) {
        return slots.default;
      }
      const cache = new Map();
      const keys = new Set();
      let current = null;
      const parentSuspense = instance.suspense;
      const { renderer: { p: patch, m: move, um: _unmount, o: { createElement } } } = sharedContext;
      const storageContainer = createElement('div');
      sharedContext.activate = (vnode, container, anchor, isSVG, optimized) => {
        const instance = vnode.component;
        move(vnode, container, anchor, 0 /* ENTER */, parentSuspense);
        // in case props have changed
        patch(instance.vnode, vnode, container, anchor, instance, parentSuspense, isSVG, vnode.slotScopeIds, optimized);
        queuePostRenderEffect(() => {
          instance.isDeactivated = false;
          if (instance.a) {
            invokeArrayFns(instance.a);
          }
          const vnodeHook = vnode.props && vnode.props.onVnodeMounted;
          if (vnodeHook) {
            invokeVNodeHook(vnodeHook, instance.parent, vnode);
          }
        }, parentSuspense);
      };
      sharedContext.deactivate = (vnode) => {
        const instance = vnode.component;
        move(vnode, storageContainer, null, 1 /* LEAVE */, parentSuspense);
        queuePostRenderEffect(() => {
          if (instance.da) {
            invokeArrayFns(instance.da);
          }
          const vnodeHook = vnode.props && vnode.props.onVnodeUnmounted;
          if (vnodeHook) {
            invokeVNodeHook(vnodeHook, instance.parent, vnode);
          }
          instance.isDeactivated = true;
        }, parentSuspense);
      };
      function unmount(vnode) {
        // reset the shapeFlag so it can be properly unmounted
        resetShapeFlag(vnode);
        _unmount(vnode, instance, parentSuspense);
      }
      function pruneCache(filter) {
        cache.forEach((vnode, key) => {
          const name = getComponentName(vnode.type);
          if (name && (!filter || !filter(name))) {
            pruneCacheEntry(key);
          }
        });
      }
      function pruneCacheEntry(key) {
        const cached = cache.get(key);
        if (!current || cached.type !== current.type) {
          unmount(cached);
        }
        else if (current) {
          // current active instance should no longer be kept-alive.
          // we can't unmount it now but it might be later, so reset its flag now.
          resetShapeFlag(current);
        }
        cache.delete(key);
        keys.delete(key);
      }
      // prune cache on include/exclude prop change
      watch(() => [props.include, props.exclude], ([include, exclude]) => {
          include && pruneCache(name => matches(include, name));
          exclude && pruneCache(name => !matches(exclude, name));
        },
        // prune post-render after `current` has been updated
        { flush: 'post', deep: true });
      // cache sub tree after render
      let pendingCacheKey = null;
      const cacheSubtree = () => {
        // fix #1621, the pendingCacheKey could be 0
        if (pendingCacheKey != null) {
          cache.set(pendingCacheKey, getInnerChild(instance.subTree));
        }
      };
      onMounted(cacheSubtree);
      onUpdated(cacheSubtree);
      onBeforeUnmount(() => {
        cache.forEach(cached => {
          const { subTree, suspense } = instance;
          const vnode = getInnerChild(subTree);
          if (cached.type === vnode.type) {
            // current instance will be unmounted as part of keep-alive's unmount
            resetShapeFlag(vnode);
            // but invoke its deactivated hook here
            const da = vnode.component.da;
            da && queuePostRenderEffect(da, suspense);
            return;
          }
          unmount(cached);
        });
      });
      return () => {
        pendingCacheKey = null;
        if (!slots.default) {
          return null;
        }
        const children = slots.default();
        const rawVNode = children[0];
        if (children.length > 1) {
          {
            warn(`KeepAlive should contain exactly one component child.`);
          }
          current = null;
          return children;
        }
        else if (!isVNode(rawVNode) ||
          (!(rawVNode.shapeFlag & 4 /* STATEFUL_COMPONENT */) &&
            !(rawVNode.shapeFlag & 128 /* SUSPENSE */))) {
          current = null;
          return rawVNode;
        }
        let vnode = getInnerChild(rawVNode);
        const comp = vnode.type;
        const name = getComponentName(comp);
        const { include, exclude, max } = props;
        if ((include && (!name || !matches(include, name))) ||
          (exclude && name && matches(exclude, name))) {
          current = vnode;
          return rawVNode;
        }
        const key = vnode.key == null ? comp : vnode.key;
        const cachedVNode = cache.get(key);
        // clone vnode if it's reused because we are going to mutate it
        if (vnode.el) {
          vnode = cloneVNode(vnode);
          if (rawVNode.shapeFlag & 128 /* SUSPENSE */) {
            rawVNode.ssContent = vnode;
          }
        }
        // #1513 it's possible for the returned vnode to be cloned due to attr
        // fallthrough or scopeId, so the vnode here may not be the final vnode
        // that is mounted. Instead of caching it directly, we store the pending
        // key and cache `instance.subTree` (the normalized vnode) in
        // beforeMount/beforeUpdate hooks.
        pendingCacheKey = key;
        if (cachedVNode) {
          // copy over mounted state
          vnode.el = cachedVNode.el;
          vnode.component = cachedVNode.component;
          if (vnode.transition) {
            // recursively update transition hooks on subTree
            setTransitionHooks(vnode, vnode.transition);
          }
          // avoid vnode being mounted as fresh
          vnode.shapeFlag |= 512 /* COMPONENT_KEPT_ALIVE */;
          // make this key the freshest
          keys.delete(key);
          keys.add(key);
        }
        else {
          keys.add(key);
          // prune oldest entry
          if (max && keys.size > parseInt(max, 10)) {
            pruneCacheEntry(keys.values().next().value);
          }
        }
        // avoid vnode being unmounted
        vnode.shapeFlag |= 256 /* COMPONENT_SHOULD_KEEP_ALIVE */;
        current = vnode;
        return rawVNode;
      };
    }
  };
  // export the public type for h/tsx inference
  // also to avoid inline import() in generated d.ts files
  const KeepAlive = KeepAliveImpl;
  function matches(pattern, name) {
    if (isArray(pattern)) {
      return pattern.some((p) => matches(p, name));
    }
    else if (isString(pattern)) {
      return pattern.split(',').indexOf(name) > -1;
    }
    else if (pattern.test) {
      return pattern.test(name);
    }
    /* istanbul ignore next */
    return false;
  }
  function onActivated(hook, target) {
    registerKeepAliveHook(hook, "a" /* ACTIVATED */, target);
  }
  function onDeactivated(hook, target) {
    registerKeepAliveHook(hook, "da" /* DEACTIVATED */, target);
  }
  function registerKeepAliveHook(hook, type, target = currentInstance) {
    // cache the deactivate branch check wrapper for injected hooks so the same
    // hook can be properly deduped by the scheduler. "__wdc" stands for "with
    // deactivation check".
    const wrappedHook = hook.__wdc ||
      (hook.__wdc = () => {
        // only fire the hook if the target instance is NOT in a deactivated branch.
        let current = target;
        while (current) {
          if (current.isDeactivated) {
            return;
          }
          current = current.parent;
        }
        hook();
      });
    injectHook(type, wrappedHook, target);
    // In addition to registering it on the target instance, we walk up the parent
    // chain and register it on all ancestor instances that are keep-alive roots.
    // This avoids the need to walk the entire component tree when invoking these
    // hooks, and more importantly, avoids the need to track child components in
    // arrays.
    if (target) {
      let current = target.parent;
      while (current && current.parent) {
        if (isKeepAlive(current.parent.vnode)) {
          injectToKeepAliveRoot(wrappedHook, type, target, current);
        }
        current = current.parent;
      }
    }
  }
  function injectToKeepAliveRoot(hook, type, target, keepAliveRoot) {
    // injectHook wraps the original for error handling, so make sure to remove
    // the wrapped version.
    const injected = injectHook(type, hook, keepAliveRoot, true /* prepend */);
    onUnmounted(() => {
      remove(keepAliveRoot[type], injected);
    }, target);
  }
  function resetShapeFlag(vnode) {
    let shapeFlag = vnode.shapeFlag;
    if (shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
      shapeFlag -= 256 /* COMPONENT_SHOULD_KEEP_ALIVE */;
    }
    if (shapeFlag & 512 /* COMPONENT_KEPT_ALIVE */) {
      shapeFlag -= 512 /* COMPONENT_KEPT_ALIVE */;
    }
    vnode.shapeFlag = shapeFlag;
  }
  function getInnerChild(vnode) {
    return vnode.shapeFlag & 128 /* SUSPENSE */ ? vnode.ssContent : vnode;
  }

  const isInternalKey = (key) => key[0] === '_' || key === '$stable';
  const normalizeSlotValue = (value) => isArray(value)
    ? value.map(normalizeVNode)
    : [normalizeVNode(value)];
  const normalizeSlot = (key, rawSlot, ctx) => withCtx((props) => {
    if (currentInstance) {
      warn(`Slot "${key}" invoked outside of the render function: ` +
        `this will not track dependencies used in the slot. ` +
        `Invoke the slot function inside the render function instead.`);
    }
    return normalizeSlotValue(rawSlot(props));
  }, ctx);
  const normalizeObjectSlots = (rawSlots, slots) => {
    const ctx = rawSlots._ctx;
    for (const key in rawSlots) {
      if (isInternalKey(key))
        continue;
      const value = rawSlots[key];
      if (isFunction(value)) {
        slots[key] = normalizeSlot(key, value, ctx);
      }
      else if (value != null) {
        {
          warn(`Non-function value encountered for slot "${key}". ` +
            `Prefer function slots for better performance.`);
        }
        const normalized = normalizeSlotValue(value);
        slots[key] = () => normalized;
      }
    }
  };
  const normalizeVNodeSlots = (instance, children) => {
    if (!isKeepAlive(instance.vnode)) {
      warn(`Non-function value encountered for default slot. ` +
        `Prefer function slots for better performance.`);
    }
    const normalized = normalizeSlotValue(children);
    instance.slots.default = () => normalized;
  };
  const initSlots = (instance, children) => {
    if (instance.vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
      const type = children._;
      if (type) {
        instance.slots = children;
        // make compiler marker non-enumerable
        def(children, '_', type);
      }
      else {
        normalizeObjectSlots(children, (instance.slots = {}));
      }
    }
    else {
      instance.slots = {};
      if (children) {
        normalizeVNodeSlots(instance, children);
      }
    }
    def(instance.slots, InternalObjectKey, 1);
  };
  const updateSlots = (instance, children, optimized) => {
    const { vnode, slots } = instance;
    let needDeletionCheck = true;
    let deletionComparisonTarget = EMPTY_OBJ;
    if (vnode.shapeFlag & 32 /* SLOTS_CHILDREN */) {
      const type = children._;
      if (type) {
        // compiled slots.
        if (isHmrUpdating) {
          // Parent was HMR updated so slot content may have changed.
          // force update slots and mark instance for hmr as well
          extend(slots, children);
        }
        else if (optimized && type === 1 /* STABLE */) {
          // compiled AND stable.
          // no need to update, and skip stale slots removal.
          needDeletionCheck = false;
        }
        else {
          // compiled but dynamic (v-if/v-for on slots) - update slots, but skip
          // normalization.
          extend(slots, children);
          // #2893
          // when rendering the optimized slots by manually written render function,
          // we need to delete the `slots._` flag if necessary to make subsequent updates reliable,
          // i.e. let the `renderSlot` create the bailed Fragment
          if (!optimized && type === 1 /* STABLE */) {
            delete slots._;
          }
        }
      }
      else {
        needDeletionCheck = !children.$stable;
        normalizeObjectSlots(children, slots);
      }
      deletionComparisonTarget = children;
    }
    else if (children) {
      // non slot object children (direct value) passed to a component
      normalizeVNodeSlots(instance, children);
      deletionComparisonTarget = { default: 1 };
    }
    // delete stale slots
    if (needDeletionCheck) {
      for (const key in slots) {
        if (!isInternalKey(key) && !(key in deletionComparisonTarget)) {
          delete slots[key];
        }
      }
    }
  };

  /**
   Runtime helper for applying directives to a vnode. Example usage:

   const comp = resolveComponent('comp')
   const foo = resolveDirective('foo')
   const bar = resolveDirective('bar')

   return withDirectives(h(comp), [
   [foo, this.x],
   [bar, this.y]
   ])
   */
  const isBuiltInDirective = /*#__PURE__*/ makeMap('bind,cloak,else-if,else,for,html,if,model,on,once,pre,show,slot,text');
  function validateDirectiveName(name) {
    if (isBuiltInDirective(name)) {
      warn('Do not use built-in directive ids as custom directive id: ' + name);
    }
  }
  /**
   * Adds directives to a VNode.
   */
  function withDirectives(vnode, directives) {
    const internalInstance = currentRenderingInstance;
    if (internalInstance === null) {
      warn(`withDirectives can only be used inside render functions.`);
      return vnode;
    }
    const instance = internalInstance.proxy;
    const bindings = vnode.dirs || (vnode.dirs = []);
    for (let i = 0; i < directives.length; i++) {
      let [dir, value, arg, modifiers = EMPTY_OBJ] = directives[i];
      if (isFunction(dir)) {
        dir = {
          mounted: dir,
          updated: dir
        };
      }
      bindings.push({
        dir,
        instance,
        value,
        oldValue: void 0,
        arg,
        modifiers
      });
    }
    return vnode;
  }
  function invokeDirectiveHook(vnode, prevVNode, instance, name) {
    const bindings = vnode.dirs;
    const oldBindings = prevVNode && prevVNode.dirs;
    for (let i = 0; i < bindings.length; i++) {
      const binding = bindings[i];
      if (oldBindings) {
        binding.oldValue = oldBindings[i].value;
      }
      const hook = binding.dir[name];
      if (hook) {
        callWithAsyncErrorHandling(hook, instance, 8 /* DIRECTIVE_HOOK */, [
          vnode.el,
          binding,
          vnode,
          prevVNode
        ]);
      }
    }
  }

  function createAppContext() {
    return {
      app: null,
      config: {
        isNativeTag: NO,
        performance: false,
        globalProperties: {},
        optionMergeStrategies: {},
        isCustomElement: NO,
        errorHandler: undefined,
        warnHandler: undefined
      },
      mixins: [],
      components: {},
      directives: {},
      provides: Object.create(null)
    };
  }
  let uid$1 = 0;
  function createAppAPI(render, hydrate) {
    return function createApp(rootComponent, rootProps = null) {
      if (rootProps != null && !isObject(rootProps)) {
        warn(`root props passed to app.mount() must be an object.`);
        rootProps = null;
      }
      const context = createAppContext();
      const installedPlugins = new Set();
      let isMounted = false;
      const app = (context.app = {
        _uid: uid$1++,
        _component: rootComponent,
        _props: rootProps,
        _container: null,
        _context: context,
        version,
        get config() {
          return context.config;
        },
        set config(v) {
          {
            warn(`app.config cannot be replaced. Modify individual options instead.`);
          }
        },
        use(plugin, ...options) {
          if (installedPlugins.has(plugin)) {
            warn(`Plugin has already been applied to target app.`);
          }
          else if (plugin && isFunction(plugin.install)) {
            installedPlugins.add(plugin);
            plugin.install(app, ...options);
          }
          else if (isFunction(plugin)) {
            installedPlugins.add(plugin);
            plugin(app, ...options);
          }
          else {
            warn(`A plugin must either be a function or an object with an "install" ` +
              `function.`);
          }
          return app;
        },
        mixin(mixin) {
          {
            if (!context.mixins.includes(mixin)) {
              context.mixins.push(mixin);
              // global mixin with props/emits de-optimizes props/emits
              // normalization caching.
              if (mixin.props || mixin.emits) {
                context.deopt = true;
              }
            }
            else {
              warn('Mixin has already been applied to target app' +
                (mixin.name ? `: ${mixin.name}` : ''));
            }
          }
          return app;
        },
        component(name, component) {
          {
            validateComponentName(name, context.config);
          }
          if (!component) {
            return context.components[name];
          }
          if (context.components[name]) {
            warn(`Component "${name}" has already been registered in target app.`);
          }
          context.components[name] = component;
          return app;
        },
        directive(name, directive) {
          {
            validateDirectiveName(name);
          }
          if (!directive) {
            return context.directives[name];
          }
          if (context.directives[name]) {
            warn(`Directive "${name}" has already been registered in target app.`);
          }
          context.directives[name] = directive;
          return app;
        },
        mount(rootContainer, isHydrate, isSVG) {
          if (!isMounted) {
            const vnode = createVNode(rootComponent, rootProps);
            // store app context on the root VNode.
            // this will be set on the root instance on initial mount.
            vnode.appContext = context;
            // HMR root reload
            {
              context.reload = () => {
                render(cloneVNode(vnode), rootContainer, isSVG);
              };
            }
            if (isHydrate && hydrate) {
              hydrate(vnode, rootContainer);
            }
            else {
              render(vnode, rootContainer, isSVG);
            }
            isMounted = true;
            app._container = rootContainer;
            rootContainer.__vue_app__ = app;
            {
              devtoolsInitApp(app, version);
            }
            return vnode.component.proxy;
          }
          else {
            warn(`App has already been mounted.\n` +
              `If you want to remount the same app, move your app creation logic ` +
              `into a factory function and create fresh app instances for each ` +
              `mount - e.g. \`const createMyApp = () => createApp(App)\``);
          }
        },
        unmount() {
          if (isMounted) {
            render(null, app._container);
            {
              devtoolsUnmountApp(app);
            }
            delete app._container.__vue_app__;
          }
          else {
            warn(`Cannot unmount an app that is not mounted.`);
          }
        },
        provide(key, value) {
          if (key in context.provides) {
            warn(`App already provides property with key "${String(key)}". ` +
              `It will be overwritten with the new value.`);
          }
          // TypeScript doesn't allow symbols as index type
          // https://github.com/Microsoft/TypeScript/issues/24587
          context.provides[key] = value;
          return app;
        }
      });
      return app;
    };
  }

  let hasMismatch = false;
  const isSVGContainer = (container) => /svg/.test(container.namespaceURI) && container.tagName !== 'foreignObject';
  const isComment = (node) => node.nodeType === 8 /* COMMENT */;
  // Note: hydration is DOM-specific
  // But we have to place it in core due to tight coupling with core - splitting
  // it out creates a ton of unnecessary complexity.
  // Hydration also depends on some renderer internal logic which needs to be
  // passed in via arguments.
  function createHydrationFunctions(rendererInternals) {
    const { mt: mountComponent, p: patch, o: { patchProp, nextSibling, parentNode, remove, insert, createComment } } = rendererInternals;
    const hydrate = (vnode, container) => {
      if (!container.hasChildNodes()) {
        warn(`Attempting to hydrate existing markup but container is empty. ` +
          `Performing full mount instead.`);
        patch(null, vnode, container);
        return;
      }
      hasMismatch = false;
      hydrateNode(container.firstChild, vnode, null, null, null);
      flushPostFlushCbs();
      if (hasMismatch && !false) {
        // this error should show up in production
        console.error(`Hydration completed but contains mismatches.`);
      }
    };
    const hydrateNode = (node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized = false) => {
      const isFragmentStart = isComment(node) && node.data === '[';
      const onMismatch = () => handleMismatch(node, vnode, parentComponent, parentSuspense, slotScopeIds, isFragmentStart);
      const { type, ref, shapeFlag } = vnode;
      const domType = node.nodeType;
      vnode.el = node;
      let nextNode = null;
      switch (type) {
        case Text:
          if (domType !== 3 /* TEXT */) {
            nextNode = onMismatch();
          }
          else {
            if (node.data !== vnode.children) {
              hasMismatch = true;
              warn(`Hydration text mismatch:` +
                `\n- Client: ${JSON.stringify(node.data)}` +
                `\n- Server: ${JSON.stringify(vnode.children)}`);
              node.data = vnode.children;
            }
            nextNode = nextSibling(node);
          }
          break;
        case Comment:
          if (domType !== 8 /* COMMENT */ || isFragmentStart) {
            nextNode = onMismatch();
          }
          else {
            nextNode = nextSibling(node);
          }
          break;
        case Static:
          if (domType !== 1 /* ELEMENT */) {
            nextNode = onMismatch();
          }
          else {
            // determine anchor, adopt content
            nextNode = node;
            // if the static vnode has its content stripped during build,
            // adopt it from the server-rendered HTML.
            const needToAdoptContent = !vnode.children.length;
            for (let i = 0; i < vnode.staticCount; i++) {
              if (needToAdoptContent)
                vnode.children += nextNode.outerHTML;
              if (i === vnode.staticCount - 1) {
                vnode.anchor = nextNode;
              }
              nextNode = nextSibling(nextNode);
            }
            return nextNode;
          }
          break;
        case Fragment:
          if (!isFragmentStart) {
            nextNode = onMismatch();
          }
          else {
            nextNode = hydrateFragment(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized);
          }
          break;
        default:
          if (shapeFlag & 1 /* ELEMENT */) {
            if (domType !== 1 /* ELEMENT */ ||
              vnode.type.toLowerCase() !==
              node.tagName.toLowerCase()) {
              nextNode = onMismatch();
            }
            else {
              nextNode = hydrateElement(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized);
            }
          }
          else if (shapeFlag & 6 /* COMPONENT */) {
            // when setting up the render effect, if the initial vnode already
            // has .el set, the component will perform hydration instead of mount
            // on its sub-tree.
            vnode.slotScopeIds = slotScopeIds;
            const container = parentNode(node);
            const hydrateComponent = () => {
              mountComponent(vnode, container, null, parentComponent, parentSuspense, isSVGContainer(container), optimized);
            };
            // async component
            const loadAsync = vnode.type.__asyncLoader;
            if (loadAsync) {
              loadAsync().then(hydrateComponent);
            }
            else {
              hydrateComponent();
            }
            // component may be async, so in the case of fragments we cannot rely
            // on component's rendered output to determine the end of the fragment
            // instead, we do a lookahead to find the end anchor node.
            nextNode = isFragmentStart
              ? locateClosingAsyncAnchor(node)
              : nextSibling(node);
          }
          else if (shapeFlag & 64 /* TELEPORT */) {
            if (domType !== 8 /* COMMENT */) {
              nextNode = onMismatch();
            }
            else {
              nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized, rendererInternals, hydrateChildren);
            }
          }
          else if (shapeFlag & 128 /* SUSPENSE */) {
            nextNode = vnode.type.hydrate(node, vnode, parentComponent, parentSuspense, isSVGContainer(parentNode(node)), slotScopeIds, optimized, rendererInternals, hydrateNode);
          }
          else {
            warn('Invalid HostVNode type:', type, `(${typeof type})`);
          }
      }
      if (ref != null) {
        setRef(ref, null, parentSuspense, vnode);
      }
      return nextNode;
    };
    const hydrateElement = (el, vnode, parentComponent, parentSuspense, slotScopeIds, optimized) => {
      optimized = optimized || !!vnode.dynamicChildren;
      const { props, patchFlag, shapeFlag, dirs } = vnode;
      // skip props & children if this is hoisted static nodes
      if (patchFlag !== -1 /* HOISTED */) {
        if (dirs) {
          invokeDirectiveHook(vnode, null, parentComponent, 'created');
        }
        // props
        if (props) {
          if (!optimized ||
            (patchFlag & 16 /* FULL_PROPS */ ||
              patchFlag & 32 /* HYDRATE_EVENTS */)) {
            for (const key in props) {
              if (!isReservedProp(key) && isOn(key)) {
                patchProp(el, key, null, props[key]);
              }
            }
          }
          else if (props.onClick) {
            // Fast path for click listeners (which is most often) to avoid
            // iterating through props.
            patchProp(el, 'onClick', null, props.onClick);
          }
        }
        // vnode / directive hooks
        let vnodeHooks;
        if ((vnodeHooks = props && props.onVnodeBeforeMount)) {
          invokeVNodeHook(vnodeHooks, parentComponent, vnode);
        }
        if (dirs) {
          invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount');
        }
        if ((vnodeHooks = props && props.onVnodeMounted) || dirs) {
          queueEffectWithSuspense(() => {
            vnodeHooks && invokeVNodeHook(vnodeHooks, parentComponent, vnode);
            dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted');
          }, parentSuspense);
        }
        // children
        if (shapeFlag & 16 /* ARRAY_CHILDREN */ &&
          // skip if element has innerHTML / textContent
          !(props && (props.innerHTML || props.textContent))) {
          let next = hydrateChildren(el.firstChild, vnode, el, parentComponent, parentSuspense, slotScopeIds, optimized);
          let hasWarned = false;
          while (next) {
            hasMismatch = true;
            if (!hasWarned) {
              warn(`Hydration children mismatch in <${vnode.type}>: ` +
                `server rendered element contains more child nodes than client vdom.`);
              hasWarned = true;
            }
            // The SSRed DOM contains more nodes than it should. Remove them.
            const cur = next;
            next = next.nextSibling;
            remove(cur);
          }
        }
        else if (shapeFlag & 8 /* TEXT_CHILDREN */) {
          if (el.textContent !== vnode.children) {
            hasMismatch = true;
            warn(`Hydration text content mismatch in <${vnode.type}>:\n` +
              `- Client: ${el.textContent}\n` +
              `- Server: ${vnode.children}`);
            el.textContent = vnode.children;
          }
        }
      }
      return el.nextSibling;
    };
    const hydrateChildren = (node, parentVNode, container, parentComponent, parentSuspense, slotScopeIds, optimized) => {
      optimized = optimized || !!parentVNode.dynamicChildren;
      const children = parentVNode.children;
      const l = children.length;
      let hasWarned = false;
      for (let i = 0; i < l; i++) {
        const vnode = optimized
          ? children[i]
          : (children[i] = normalizeVNode(children[i]));
        if (node) {
          node = hydrateNode(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized);
        }
        else if (vnode.type === Text && !vnode.children) {
          continue;
        }
        else {
          hasMismatch = true;
          if (!hasWarned) {
            warn(`Hydration children mismatch in <${container.tagName.toLowerCase()}>: ` +
              `server rendered element contains fewer child nodes than client vdom.`);
            hasWarned = true;
          }
          // the SSRed DOM didn't contain enough nodes. Mount the missing ones.
          patch(null, vnode, container, null, parentComponent, parentSuspense, isSVGContainer(container), slotScopeIds);
        }
      }
      return node;
    };
    const hydrateFragment = (node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized) => {
      const { slotScopeIds: fragmentSlotScopeIds } = vnode;
      if (fragmentSlotScopeIds) {
        slotScopeIds = slotScopeIds
          ? slotScopeIds.concat(fragmentSlotScopeIds)
          : fragmentSlotScopeIds;
      }
      const container = parentNode(node);
      const next = hydrateChildren(nextSibling(node), vnode, container, parentComponent, parentSuspense, slotScopeIds, optimized);
      if (next && isComment(next) && next.data === ']') {
        return nextSibling((vnode.anchor = next));
      }
      else {
        // fragment didn't hydrate successfully, since we didn't get a end anchor
        // back. This should have led to node/children mismatch warnings.
        hasMismatch = true;
        // since the anchor is missing, we need to create one and insert it
        insert((vnode.anchor = createComment(`]`)), container, next);
        return next;
      }
    };
    const handleMismatch = (node, vnode, parentComponent, parentSuspense, slotScopeIds, isFragment) => {
      hasMismatch = true;
      warn(`Hydration node mismatch:\n- Client vnode:`, vnode.type, `\n- Server rendered DOM:`, node, node.nodeType === 3 /* TEXT */
        ? `(text)`
        : isComment(node) && node.data === '['
          ? `(start of fragment)`
          : ``);
      vnode.el = null;
      if (isFragment) {
        // remove excessive fragment nodes
        const end = locateClosingAsyncAnchor(node);
        while (true) {
          const next = nextSibling(node);
          if (next && next !== end) {
            remove(next);
          }
          else {
            break;
          }
        }
      }
      const next = nextSibling(node);
      const container = parentNode(node);
      remove(node);
      patch(null, vnode, container, next, parentComponent, parentSuspense, isSVGContainer(container), slotScopeIds);
      return next;
    };
    const locateClosingAsyncAnchor = (node) => {
      let match = 0;
      while (node) {
        node = nextSibling(node);
        if (node && isComment(node)) {
          if (node.data === '[')
            match++;
          if (node.data === ']') {
            if (match === 0) {
              return nextSibling(node);
            }
            else {
              match--;
            }
          }
        }
      }
      return node;
    };
    return [hydrate, hydrateNode];
  }

  let supported;
  let perf;
  function startMeasure(instance, type) {
    if (instance.appContext.config.performance && isSupported()) {
      perf.mark(`vue-${type}-${instance.uid}`);
    }
  }
  function endMeasure(instance, type) {
    if (instance.appContext.config.performance && isSupported()) {
      const startTag = `vue-${type}-${instance.uid}`;
      const endTag = startTag + `:end`;
      perf.mark(endTag);
      perf.measure(`<${formatComponentName(instance, instance.type)}> ${type}`, startTag, endTag);
      perf.clearMarks(startTag);
      perf.clearMarks(endTag);
    }
  }
  function isSupported() {
    if (supported !== undefined) {
      return supported;
    }
    /* eslint-disable no-restricted-globals */
    if (typeof window !== 'undefined' && window.performance) {
      supported = true;
      perf = window.performance;
    }
    else {
      supported = false;
    }
    /* eslint-enable no-restricted-globals */
    return supported;
  }

  // implementation, close to no-op
  function defineComponent(options) {
    return isFunction(options) ? { setup: options, name: options.name } : options;
  }

  const isAsyncWrapper = (i) => !!i.type.__asyncLoader;
  function defineAsyncComponent(source) {
    if (isFunction(source)) {
      source = { loader: source };
    }
    const { loader, loadingComponent, errorComponent, delay = 200, timeout, // undefined = never times out
      suspensible = true, onError: userOnError } = source;
    let pendingRequest = null;
    let resolvedComp;
    let retries = 0;
    const retry = () => {
      retries++;
      pendingRequest = null;
      return load();
    };
    const load = () => {
      let thisRequest;
      return (pendingRequest ||
        (thisRequest = pendingRequest = loader()
          .catch(err => {
            err = err instanceof Error ? err : new Error(String(err));
            if (userOnError) {
              return new Promise((resolve, reject) => {
                const userRetry = () => resolve(retry());
                const userFail = () => reject(err);
                userOnError(err, userRetry, userFail, retries + 1);
              });
            }
            else {
              throw err;
            }
          })
          .then((comp) => {
            if (thisRequest !== pendingRequest && pendingRequest) {
              return pendingRequest;
            }
            if (!comp) {
              warn(`Async component loader resolved to undefined. ` +
                `If you are using retry(), make sure to return its return value.`);
            }
            // interop module default
            if (comp &&
              (comp.__esModule || comp[Symbol.toStringTag] === 'Module')) {
              comp = comp.default;
            }
            if (comp && !isObject(comp) && !isFunction(comp)) {
              throw new Error(`Invalid async component load result: ${comp}`);
            }
            resolvedComp = comp;
            return comp;
          })));
    };
    return defineComponent({
      __asyncLoader: load,
      name: 'AsyncComponentWrapper',
      setup() {
        const instance = currentInstance;
        // already resolved
        if (resolvedComp) {
          return () => createInnerComp(resolvedComp, instance);
        }
        const onError = (err) => {
          pendingRequest = null;
          handleError(err, instance, 13 /* ASYNC_COMPONENT_LOADER */, !errorComponent /* do not throw in dev if user provided error component */);
        };
        // suspense-controlled or SSR.
        if ((suspensible && instance.suspense) ||
          (false )) {
          return load()
            .then(comp => {
              return () => createInnerComp(comp, instance);
            })
            .catch(err => {
              onError(err);
              return () => errorComponent
                ? createVNode(errorComponent, {
                  error: err
                })
                : null;
            });
        }
        const loaded = ref(false);
        const error = ref();
        const delayed = ref(!!delay);
        if (delay) {
          setTimeout(() => {
            delayed.value = false;
          }, delay);
        }
        if (timeout != null) {
          setTimeout(() => {
            if (!loaded.value && !error.value) {
              const err = new Error(`Async component timed out after ${timeout}ms.`);
              onError(err);
              error.value = err;
            }
          }, timeout);
        }
        load()
          .then(() => {
            loaded.value = true;
          })
          .catch(err => {
            onError(err);
            error.value = err;
          });
        return () => {
          if (loaded.value && resolvedComp) {
            return createInnerComp(resolvedComp, instance);
          }
          else if (error.value && errorComponent) {
            return createVNode(errorComponent, {
              error: error.value
            });
          }
          else if (loadingComponent && !delayed.value) {
            return createVNode(loadingComponent);
          }
        };
      }
    });
  }
  function createInnerComp(comp, { vnode: { ref, props, children } }) {
    const vnode = createVNode(comp, props, children);
    // ensure inner component inherits the async wrapper's ref owner
    vnode.ref = ref;
    return vnode;
  }

  function createDevEffectOptions(instance) {
    return {
      scheduler: queueJob,
      allowRecurse: true,
      onTrack: instance.rtc ? e => invokeArrayFns(instance.rtc, e) : void 0,
      onTrigger: instance.rtg ? e => invokeArrayFns(instance.rtg, e) : void 0
    };
  }
  const queuePostRenderEffect = queueEffectWithSuspense
  ;
  const setRef = (rawRef, oldRawRef, parentSuspense, vnode) => {
    if (isArray(rawRef)) {
      rawRef.forEach((r, i) => setRef(r, oldRawRef && (isArray(oldRawRef) ? oldRawRef[i] : oldRawRef), parentSuspense, vnode));
      return;
    }
    let value;
    if (!vnode) {
      // means unmount
      value = null;
    }
    else if (isAsyncWrapper(vnode)) {
      // when mounting async components, nothing needs to be done,
      // because the template ref is forwarded to inner component
      return;
    }
    else if (vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */) {
      value = vnode.component.exposed || vnode.component.proxy;
    }
    else {
      value = vnode.el;
    }
    const { i: owner, r: ref } = rawRef;
    if (!owner) {
      warn(`Missing ref owner context. ref cannot be used on hoisted vnodes. ` +
        `A vnode with ref must be created inside the render function.`);
      return;
    }
    const oldRef = oldRawRef && oldRawRef.r;
    const refs = owner.refs === EMPTY_OBJ ? (owner.refs = {}) : owner.refs;
    const setupState = owner.setupState;
    // unset old ref
    if (oldRef != null && oldRef !== ref) {
      if (isString(oldRef)) {
        refs[oldRef] = null;
        if (hasOwn(setupState, oldRef)) {
          setupState[oldRef] = null;
        }
      }
      else if (isRef(oldRef)) {
        oldRef.value = null;
      }
    }
    if (isString(ref)) {
      const doSet = () => {
        refs[ref] = value;
        if (hasOwn(setupState, ref)) {
          setupState[ref] = value;
        }
      };
      // #1789: for non-null values, set them after render
      // null values means this is unmount and it should not overwrite another
      // ref with the same key
      if (value) {
        doSet.id = -1;
        queuePostRenderEffect(doSet, parentSuspense);
      }
      else {
        doSet();
      }
    }
    else if (isRef(ref)) {
      const doSet = () => {
        ref.value = value;
      };
      if (value) {
        doSet.id = -1;
        queuePostRenderEffect(doSet, parentSuspense);
      }
      else {
        doSet();
      }
    }
    else if (isFunction(ref)) {
      callWithErrorHandling(ref, owner, 12 /* FUNCTION_REF */, [value, refs]);
    }
    else {
      warn('Invalid template ref type:', value, `(${typeof value})`);
    }
  };
  /**
   * The createRenderer function accepts two generic arguments:
   * HostNode and HostElement, corresponding to Node and Element types in the
   * host environment. For example, for runtime-dom, HostNode would be the DOM
   * `Node` interface and HostElement would be the DOM `Element` interface.
   *
   * Custom renderers can pass in the platform specific types like this:
   *
   * ``` js
   * const { render, createApp } = createRenderer<Node, Element>({
   *   patchProp,
   *   ...nodeOps
   * })
   * ```
   */
  function createRenderer(options) {
    return baseCreateRenderer(options);
  }
  // Separate API for creating hydration-enabled renderer.
  // Hydration logic is only used when calling this function, making it
  // tree-shakable.
  function createHydrationRenderer(options) {
    return baseCreateRenderer(options, createHydrationFunctions);
  }
  // implementation
  function baseCreateRenderer(options, createHydrationFns) {
    {
      const target = getGlobalThis();
      target.__VUE__ = true;
      setDevtoolsHook(target.__VUE_DEVTOOLS_GLOBAL_HOOK__);
    }
    const { insert: hostInsert, remove: hostRemove, patchProp: hostPatchProp, forcePatchProp: hostForcePatchProp, createElement: hostCreateElement, createText: hostCreateText, createComment: hostCreateComment, setText: hostSetText, setElementText: hostSetElementText, parentNode: hostParentNode, nextSibling: hostNextSibling, setScopeId: hostSetScopeId = NOOP, cloneNode: hostCloneNode, insertStaticContent: hostInsertStaticContent } = options;
    // Note: functions inside this closure should use `const xxx = () => {}`
    // style in order to prevent being inlined by minifiers.
    const patch = (n1, n2, container, anchor = null, parentComponent = null, parentSuspense = null, isSVG = false, slotScopeIds = null, optimized = false) => {
      // patching & not same type, unmount old tree
      if (n1 && !isSameVNodeType(n1, n2)) {
        anchor = getNextHostNode(n1);
        unmount(n1, parentComponent, parentSuspense, true);
        n1 = null;
      }
      if (n2.patchFlag === -2 /* BAIL */) {
        optimized = false;
        n2.dynamicChildren = null;
      }
      const { type, ref, shapeFlag } = n2;
      switch (type) {
        case Text:
          processText(n1, n2, container, anchor);
          break;
        case Comment:
          processCommentNode(n1, n2, container, anchor);
          break;
        case Static:
          if (n1 == null) {
            mountStaticNode(n2, container, anchor, isSVG);
          }
          else {
            patchStaticNode(n1, n2, container, isSVG);
          }
          break;
        case Fragment:
          processFragment(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          break;
        default:
          if (shapeFlag & 1 /* ELEMENT */) {
            processElement(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
          else if (shapeFlag & 6 /* COMPONENT */) {
            processComponent(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
          else if (shapeFlag & 64 /* TELEPORT */) {
            type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals);
          }
          else if (shapeFlag & 128 /* SUSPENSE */) {
            type.process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals);
          }
          else {
            warn('Invalid VNode type:', type, `(${typeof type})`);
          }
      }
      // set ref
      if (ref != null && parentComponent) {
        setRef(ref, n1 && n1.ref, parentSuspense, n2);
      }
    };
    const processText = (n1, n2, container, anchor) => {
      if (n1 == null) {
        hostInsert((n2.el = hostCreateText(n2.children)), container, anchor);
      }
      else {
        const el = (n2.el = n1.el);
        if (n2.children !== n1.children) {
          hostSetText(el, n2.children);
        }
      }
    };
    const processCommentNode = (n1, n2, container, anchor) => {
      if (n1 == null) {
        hostInsert((n2.el = hostCreateComment(n2.children || '')), container, anchor);
      }
      else {
        // there's no support for dynamic comments
        n2.el = n1.el;
      }
    };
    const mountStaticNode = (n2, container, anchor, isSVG) => {
      [n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG);
    };
    /**
     * Dev / HMR only
     */
    const patchStaticNode = (n1, n2, container, isSVG) => {
      // static nodes are only patched during dev for HMR
      if (n2.children !== n1.children) {
        const anchor = hostNextSibling(n1.anchor);
        // remove existing
        removeStaticNode(n1);
        [n2.el, n2.anchor] = hostInsertStaticContent(n2.children, container, anchor, isSVG);
      }
      else {
        n2.el = n1.el;
        n2.anchor = n1.anchor;
      }
    };
    const moveStaticNode = ({ el, anchor }, container, nextSibling) => {
      let next;
      while (el && el !== anchor) {
        next = hostNextSibling(el);
        hostInsert(el, container, nextSibling);
        el = next;
      }
      hostInsert(anchor, container, nextSibling);
    };
    const removeStaticNode = ({ el, anchor }) => {
      let next;
      while (el && el !== anchor) {
        next = hostNextSibling(el);
        hostRemove(el);
        el = next;
      }
      hostRemove(anchor);
    };
    const processElement = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      isSVG = isSVG || n2.type === 'svg';
      if (n1 == null) {
        mountElement(n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
      }
      else {
        patchElement(n1, n2, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
      }
    };
    const mountElement = (vnode, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      let el;
      let vnodeHook;
      const { type, props, shapeFlag, transition, patchFlag, dirs } = vnode;
      {
        el = vnode.el = hostCreateElement(vnode.type, isSVG, props && props.is, props);
        // mount children first, since some props may rely on child content
        // being already rendered, e.g. `<select value>`
        if (shapeFlag & 8 /* TEXT_CHILDREN */) {
          hostSetElementText(el, vnode.children);
        }
        else if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
          mountChildren(vnode.children, el, null, parentComponent, parentSuspense, isSVG && type !== 'foreignObject', slotScopeIds, optimized || !!vnode.dynamicChildren);
        }
        if (dirs) {
          invokeDirectiveHook(vnode, null, parentComponent, 'created');
        }
        // props
        if (props) {
          for (const key in props) {
            if (!isReservedProp(key)) {
              hostPatchProp(el, key, null, props[key], isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
            }
          }
          if ((vnodeHook = props.onVnodeBeforeMount)) {
            invokeVNodeHook(vnodeHook, parentComponent, vnode);
          }
        }
        // scopeId
        setScopeId(el, vnode, vnode.scopeId, slotScopeIds, parentComponent);
      }
      {
        Object.defineProperty(el, '__vnode', {
          value: vnode,
          enumerable: false
        });
        Object.defineProperty(el, '__vueParentComponent', {
          value: parentComponent,
          enumerable: false
        });
      }
      if (dirs) {
        invokeDirectiveHook(vnode, null, parentComponent, 'beforeMount');
      }
      // #1583 For inside suspense + suspense not resolved case, enter hook should call when suspense resolved
      // #1689 For inside suspense + suspense resolved case, just call it
      const needCallTransitionHooks = (!parentSuspense || (parentSuspense && !parentSuspense.pendingBranch)) &&
        transition &&
        !transition.persisted;
      if (needCallTransitionHooks) {
        transition.beforeEnter(el);
      }
      hostInsert(el, container, anchor);
      if ((vnodeHook = props && props.onVnodeMounted) ||
        needCallTransitionHooks ||
        dirs) {
        queuePostRenderEffect(() => {
          vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode);
          needCallTransitionHooks && transition.enter(el);
          dirs && invokeDirectiveHook(vnode, null, parentComponent, 'mounted');
        }, parentSuspense);
      }
    };
    const setScopeId = (el, vnode, scopeId, slotScopeIds, parentComponent) => {
      if (scopeId) {
        hostSetScopeId(el, scopeId);
      }
      if (slotScopeIds) {
        for (let i = 0; i < slotScopeIds.length; i++) {
          hostSetScopeId(el, slotScopeIds[i]);
        }
      }
      if (parentComponent) {
        let subTree = parentComponent.subTree;
        if (subTree.patchFlag > 0 &&
          subTree.patchFlag & 2048 /* DEV_ROOT_FRAGMENT */) {
          subTree =
            filterSingleRoot(subTree.children) || subTree;
        }
        if (vnode === subTree) {
          const parentVNode = parentComponent.vnode;
          setScopeId(el, parentVNode, parentVNode.scopeId, parentVNode.slotScopeIds, parentComponent.parent);
        }
      }
    };
    const mountChildren = (children, container, anchor, parentComponent, parentSuspense, isSVG, optimized, slotScopeIds, start = 0) => {
      for (let i = start; i < children.length; i++) {
        const child = (children[i] = optimized
          ? cloneIfMounted(children[i])
          : normalizeVNode(children[i]));
        patch(null, child, container, anchor, parentComponent, parentSuspense, isSVG, optimized, slotScopeIds);
      }
    };
    const patchElement = (n1, n2, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      const el = (n2.el = n1.el);
      let { patchFlag, dynamicChildren, dirs } = n2;
      // #1426 take the old vnode's patch flag into account since user may clone a
      // compiler-generated vnode, which de-opts to FULL_PROPS
      patchFlag |= n1.patchFlag & 16 /* FULL_PROPS */;
      const oldProps = n1.props || EMPTY_OBJ;
      const newProps = n2.props || EMPTY_OBJ;
      let vnodeHook;
      if ((vnodeHook = newProps.onVnodeBeforeUpdate)) {
        invokeVNodeHook(vnodeHook, parentComponent, n2, n1);
      }
      if (dirs) {
        invokeDirectiveHook(n2, n1, parentComponent, 'beforeUpdate');
      }
      if (isHmrUpdating) {
        // HMR updated, force full diff
        patchFlag = 0;
        optimized = false;
        dynamicChildren = null;
      }
      if (patchFlag > 0) {
        // the presence of a patchFlag means this element's render code was
        // generated by the compiler and can take the fast path.
        // in this path old node and new node are guaranteed to have the same shape
        // (i.e. at the exact same position in the source template)
        if (patchFlag & 16 /* FULL_PROPS */) {
          // element props contain dynamic keys, full diff needed
          patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
        }
        else {
          // class
          // this flag is matched when the element has dynamic class bindings.
          if (patchFlag & 2 /* CLASS */) {
            if (oldProps.class !== newProps.class) {
              hostPatchProp(el, 'class', null, newProps.class, isSVG);
            }
          }
          // style
          // this flag is matched when the element has dynamic style bindings
          if (patchFlag & 4 /* STYLE */) {
            hostPatchProp(el, 'style', oldProps.style, newProps.style, isSVG);
          }
          // props
          // This flag is matched when the element has dynamic prop/attr bindings
          // other than class and style. The keys of dynamic prop/attrs are saved for
          // faster iteration.
          // Note dynamic keys like :[foo]="bar" will cause this optimization to
          // bail out and go through a full diff because we need to unset the old key
          if (patchFlag & 8 /* PROPS */) {
            // if the flag is present then dynamicProps must be non-null
            const propsToUpdate = n2.dynamicProps;
            for (let i = 0; i < propsToUpdate.length; i++) {
              const key = propsToUpdate[i];
              const prev = oldProps[key];
              const next = newProps[key];
              if (next !== prev ||
                (hostForcePatchProp && hostForcePatchProp(el, key))) {
                hostPatchProp(el, key, prev, next, isSVG, n1.children, parentComponent, parentSuspense, unmountChildren);
              }
            }
          }
        }
        // text
        // This flag is matched when the element has only dynamic text children.
        if (patchFlag & 1 /* TEXT */) {
          if (n1.children !== n2.children) {
            hostSetElementText(el, n2.children);
          }
        }
      }
      else if (!optimized && dynamicChildren == null) {
        // unoptimized, full diff
        patchProps(el, n2, oldProps, newProps, parentComponent, parentSuspense, isSVG);
      }
      const areChildrenSVG = isSVG && n2.type !== 'foreignObject';
      if (dynamicChildren) {
        patchBlockChildren(n1.dynamicChildren, dynamicChildren, el, parentComponent, parentSuspense, areChildrenSVG, slotScopeIds);
        if (parentComponent && parentComponent.type.__hmrId) {
          traverseStaticChildren(n1, n2);
        }
      }
      else if (!optimized) {
        // full diff
        patchChildren(n1, n2, el, null, parentComponent, parentSuspense, areChildrenSVG, slotScopeIds, false);
      }
      if ((vnodeHook = newProps.onVnodeUpdated) || dirs) {
        queuePostRenderEffect(() => {
          vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, n2, n1);
          dirs && invokeDirectiveHook(n2, n1, parentComponent, 'updated');
        }, parentSuspense);
      }
    };
    // The fast path for blocks.
    const patchBlockChildren = (oldChildren, newChildren, fallbackContainer, parentComponent, parentSuspense, isSVG, slotScopeIds) => {
      for (let i = 0; i < newChildren.length; i++) {
        const oldVNode = oldChildren[i];
        const newVNode = newChildren[i];
        // Determine the container (parent element) for the patch.
        const container =
          // - In the case of a Fragment, we need to provide the actual parent
          // of the Fragment itself so it can move its children.
          oldVNode.type === Fragment ||
          // - In the case of different nodes, there is going to be a replacement
          // which also requires the correct parent container
          !isSameVNodeType(oldVNode, newVNode) ||
          // - In the case of a component, it could contain anything.
          oldVNode.shapeFlag & 6 /* COMPONENT */ ||
          oldVNode.shapeFlag & 64 /* TELEPORT */
            ? hostParentNode(oldVNode.el)
            : // In other cases, the parent container is not actually used so we
            // just pass the block element here to avoid a DOM parentNode call.
            fallbackContainer;
        patch(oldVNode, newVNode, container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, true);
      }
    };
    const patchProps = (el, vnode, oldProps, newProps, parentComponent, parentSuspense, isSVG) => {
      if (oldProps !== newProps) {
        for (const key in newProps) {
          // empty string is not valid prop
          if (isReservedProp(key))
            continue;
          const next = newProps[key];
          const prev = oldProps[key];
          if (next !== prev ||
            (hostForcePatchProp && hostForcePatchProp(el, key))) {
            hostPatchProp(el, key, prev, next, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
          }
        }
        if (oldProps !== EMPTY_OBJ) {
          for (const key in oldProps) {
            if (!isReservedProp(key) && !(key in newProps)) {
              hostPatchProp(el, key, oldProps[key], null, isSVG, vnode.children, parentComponent, parentSuspense, unmountChildren);
            }
          }
        }
      }
    };
    const processFragment = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      const fragmentStartAnchor = (n2.el = n1 ? n1.el : hostCreateText(''));
      const fragmentEndAnchor = (n2.anchor = n1 ? n1.anchor : hostCreateText(''));
      let { patchFlag, dynamicChildren, slotScopeIds: fragmentSlotScopeIds } = n2;
      if (patchFlag > 0) {
        optimized = true;
      }
      // check if this is a slot fragment with :slotted scope ids
      if (fragmentSlotScopeIds) {
        slotScopeIds = slotScopeIds
          ? slotScopeIds.concat(fragmentSlotScopeIds)
          : fragmentSlotScopeIds;
      }
      if (isHmrUpdating) {
        // HMR updated, force full diff
        patchFlag = 0;
        optimized = false;
        dynamicChildren = null;
      }
      if (n1 == null) {
        hostInsert(fragmentStartAnchor, container, anchor);
        hostInsert(fragmentEndAnchor, container, anchor);
        // a fragment can only have array children
        // since they are either generated by the compiler, or implicitly created
        // from arrays.
        mountChildren(n2.children, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
      }
      else {
        if (patchFlag > 0 &&
          patchFlag & 64 /* STABLE_FRAGMENT */ &&
          dynamicChildren &&
          // #2715 the previous fragment could've been a BAILed one as a result
          // of renderSlot() with no valid children
          n1.dynamicChildren) {
          // a stable fragment (template root or <template v-for>) doesn't need to
          // patch children order, but it may contain dynamicChildren.
          patchBlockChildren(n1.dynamicChildren, dynamicChildren, container, parentComponent, parentSuspense, isSVG, slotScopeIds);
          if (parentComponent && parentComponent.type.__hmrId) {
            traverseStaticChildren(n1, n2);
          }
          else if (
            // #2080 if the stable fragment has a key, it's a <template v-for> that may
            //  get moved around. Make sure all root level vnodes inherit el.
            // #2134 or if it's a component root, it may also get moved around
            // as the component is being moved.
            n2.key != null ||
            (parentComponent && n2 === parentComponent.subTree)) {
            traverseStaticChildren(n1, n2, true /* shallow */);
          }
        }
        else {
          // keyed / unkeyed, or manual fragments.
          // for keyed & unkeyed, since they are compiler generated from v-for,
          // each child is guaranteed to be a block so the fragment will never
          // have dynamicChildren.
          patchChildren(n1, n2, container, fragmentEndAnchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
        }
      }
    };
    const processComponent = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      n2.slotScopeIds = slotScopeIds;
      if (n1 == null) {
        if (n2.shapeFlag & 512 /* COMPONENT_KEPT_ALIVE */) {
          parentComponent.ctx.activate(n2, container, anchor, isSVG, optimized);
        }
        else {
          mountComponent(n2, container, anchor, parentComponent, parentSuspense, isSVG, optimized);
        }
      }
      else {
        updateComponent(n1, n2, optimized);
      }
    };
    const mountComponent = (initialVNode, container, anchor, parentComponent, parentSuspense, isSVG, optimized) => {
      const instance = (initialVNode.component = createComponentInstance(initialVNode, parentComponent, parentSuspense));
      if (instance.type.__hmrId) {
        registerHMR(instance);
      }
      {
        pushWarningContext(initialVNode);
        startMeasure(instance, `mount`);
      }
      // inject renderer internals for keepAlive
      if (isKeepAlive(initialVNode)) {
        instance.ctx.renderer = internals;
      }
      // resolve props and slots for setup context
      {
        startMeasure(instance, `init`);
      }
      setupComponent(instance);
      {
        endMeasure(instance, `init`);
      }
      // setup() is async. This component relies on async logic to be resolved
      // before proceeding
      if (instance.asyncDep) {
        parentSuspense && parentSuspense.registerDep(instance, setupRenderEffect);
        // Give it a placeholder if this is not hydration
        // TODO handle self-defined fallback
        if (!initialVNode.el) {
          const placeholder = (instance.subTree = createVNode(Comment));
          processCommentNode(null, placeholder, container, anchor);
        }
        return;
      }
      setupRenderEffect(instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized);
      {
        popWarningContext();
        endMeasure(instance, `mount`);
      }
    };
    const updateComponent = (n1, n2, optimized) => {
      const instance = (n2.component = n1.component);
      if (shouldUpdateComponent(n1, n2, optimized)) {
        if (instance.asyncDep &&
          !instance.asyncResolved) {
          // async & still pending - just update props and slots
          // since the component's reactive effect for render isn't set-up yet
          {
            pushWarningContext(n2);
          }
          updateComponentPreRender(instance, n2, optimized);
          {
            popWarningContext();
          }
          return;
        }
        else {
          // normal update
          instance.next = n2;
          // in case the child component is also queued, remove it to avoid
          // double updating the same child component in the same flush.
          invalidateJob(instance.update);
          // instance.update is the reactive effect runner.
          instance.update();
        }
      }
      else {
        // no update needed. just copy over properties
        n2.component = n1.component;
        n2.el = n1.el;
        instance.vnode = n2;
      }
    };
    const setupRenderEffect = (instance, initialVNode, container, anchor, parentSuspense, isSVG, optimized) => {
      // create reactive effect for rendering
      instance.update = effect(function componentEffect() {
        if (!instance.isMounted) {
          let vnodeHook;
          const { el, props } = initialVNode;
          const { bm, m, parent } = instance;
          // beforeMount hook
          if (bm) {
            invokeArrayFns(bm);
          }
          // onVnodeBeforeMount
          if ((vnodeHook = props && props.onVnodeBeforeMount)) {
            invokeVNodeHook(vnodeHook, parent, initialVNode);
          }
          // render
          {
            startMeasure(instance, `render`);
          }
          const subTree = (instance.subTree = renderComponentRoot(instance));
          {
            endMeasure(instance, `render`);
          }
          if (el && hydrateNode) {
            {
              startMeasure(instance, `hydrate`);
            }
            // vnode has adopted host node - perform hydration instead of mount.
            hydrateNode(initialVNode.el, subTree, instance, parentSuspense, null);
            {
              endMeasure(instance, `hydrate`);
            }
          }
          else {
            {
              startMeasure(instance, `patch`);
            }
            patch(null, subTree, container, anchor, instance, parentSuspense, isSVG);
            {
              endMeasure(instance, `patch`);
            }
            initialVNode.el = subTree.el;
          }
          // mounted hook
          if (m) {
            queuePostRenderEffect(m, parentSuspense);
          }
          // onVnodeMounted
          if ((vnodeHook = props && props.onVnodeMounted)) {
            const scopedInitialVNode = initialVNode;
            queuePostRenderEffect(() => {
              invokeVNodeHook(vnodeHook, parent, scopedInitialVNode);
            }, parentSuspense);
          }
          // activated hook for keep-alive roots.
          // #1742 activated hook must be accessed after first render
          // since the hook may be injected by a child keep-alive
          const { a } = instance;
          if (a &&
            initialVNode.shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
            queuePostRenderEffect(a, parentSuspense);
          }
          instance.isMounted = true;
          {
            devtoolsComponentAdded(instance);
          }
          // #2458: deference mount-only object parameters to prevent memleaks
          initialVNode = container = anchor = null;
        }
        else {
          // updateComponent
          // This is triggered by mutation of component's own state (next: null)
          // OR parent calling processComponent (next: VNode)
          let { next, bu, u, parent, vnode } = instance;
          let originNext = next;
          let vnodeHook;
          {
            pushWarningContext(next || instance.vnode);
          }
          if (next) {
            next.el = vnode.el;
            updateComponentPreRender(instance, next, optimized);
          }
          else {
            next = vnode;
          }
          // beforeUpdate hook
          if (bu) {
            invokeArrayFns(bu);
          }
          // onVnodeBeforeUpdate
          if ((vnodeHook = next.props && next.props.onVnodeBeforeUpdate)) {
            invokeVNodeHook(vnodeHook, parent, next, vnode);
          }
          // render
          {
            startMeasure(instance, `render`);
          }
          const nextTree = renderComponentRoot(instance);
          {
            endMeasure(instance, `render`);
          }
          const prevTree = instance.subTree;
          instance.subTree = nextTree;
          {
            startMeasure(instance, `patch`);
          }
          patch(prevTree, nextTree,
            // parent may have changed if it's in a teleport
            hostParentNode(prevTree.el),
            // anchor may have changed if it's in a fragment
            getNextHostNode(prevTree), instance, parentSuspense, isSVG);
          {
            endMeasure(instance, `patch`);
          }
          next.el = nextTree.el;
          if (originNext === null) {
            // self-triggered update. In case of HOC, update parent component
            // vnode el. HOC is indicated by parent instance's subTree pointing
            // to child component's vnode
            updateHOCHostEl(instance, nextTree.el);
          }
          // updated hook
          if (u) {
            queuePostRenderEffect(u, parentSuspense);
          }
          // onVnodeUpdated
          if ((vnodeHook = next.props && next.props.onVnodeUpdated)) {
            queuePostRenderEffect(() => {
              invokeVNodeHook(vnodeHook, parent, next, vnode);
            }, parentSuspense);
          }
          {
            devtoolsComponentUpdated(instance);
          }
          {
            popWarningContext();
          }
        }
      }, createDevEffectOptions(instance) );
    };
    const updateComponentPreRender = (instance, nextVNode, optimized) => {
      nextVNode.component = instance;
      const prevProps = instance.vnode.props;
      instance.vnode = nextVNode;
      instance.next = null;
      updateProps(instance, nextVNode.props, prevProps, optimized);
      updateSlots(instance, nextVNode.children, optimized);
      pauseTracking();
      // props update may have triggered pre-flush watchers.
      // flush them before the render update.
      flushPreFlushCbs(undefined, instance.update);
      resetTracking();
    };
    const patchChildren = (n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized = false) => {
      const c1 = n1 && n1.children;
      const prevShapeFlag = n1 ? n1.shapeFlag : 0;
      const c2 = n2.children;
      const { patchFlag, shapeFlag } = n2;
      // fast path
      if (patchFlag > 0) {
        if (patchFlag & 128 /* KEYED_FRAGMENT */) {
          // this could be either fully-keyed or mixed (some keyed some not)
          // presence of patchFlag means children are guaranteed to be arrays
          patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          return;
        }
        else if (patchFlag & 256 /* UNKEYED_FRAGMENT */) {
          // unkeyed
          patchUnkeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          return;
        }
      }
      // children has 3 possibilities: text, array or no children.
      if (shapeFlag & 8 /* TEXT_CHILDREN */) {
        // text children fast path
        if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
          unmountChildren(c1, parentComponent, parentSuspense);
        }
        if (c2 !== c1) {
          hostSetElementText(container, c2);
        }
      }
      else {
        if (prevShapeFlag & 16 /* ARRAY_CHILDREN */) {
          // prev children was array
          if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
            // two arrays, cannot assume anything, do full diff
            patchKeyedChildren(c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
          else {
            // no new children, just unmount old
            unmountChildren(c1, parentComponent, parentSuspense, true);
          }
        }
        else {
          // prev children was text OR null
          // new children is array OR null
          if (prevShapeFlag & 8 /* TEXT_CHILDREN */) {
            hostSetElementText(container, '');
          }
          // mount new if array
          if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
            mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
        }
      }
    };
    const patchUnkeyedChildren = (c1, c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      c1 = c1 || EMPTY_ARR;
      c2 = c2 || EMPTY_ARR;
      const oldLength = c1.length;
      const newLength = c2.length;
      const commonLength = Math.min(oldLength, newLength);
      let i;
      for (i = 0; i < commonLength; i++) {
        const nextChild = (c2[i] = optimized
          ? cloneIfMounted(c2[i])
          : normalizeVNode(c2[i]));
        patch(c1[i], nextChild, container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
      }
      if (oldLength > newLength) {
        // remove old
        unmountChildren(c1, parentComponent, parentSuspense, true, false, commonLength);
      }
      else {
        // mount new
        mountChildren(c2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, commonLength);
      }
    };
    // can be all-keyed or mixed
    const patchKeyedChildren = (c1, c2, container, parentAnchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized) => {
      let i = 0;
      const l2 = c2.length;
      let e1 = c1.length - 1; // prev ending index
      let e2 = l2 - 1; // next ending index
      // 1. sync from start
      // (a b) c
      // (a b) d e
      while (i <= e1 && i <= e2) {
        const n1 = c1[i];
        const n2 = (c2[i] = optimized
          ? cloneIfMounted(c2[i])
          : normalizeVNode(c2[i]));
        if (isSameVNodeType(n1, n2)) {
          patch(n1, n2, container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
        }
        else {
          break;
        }
        i++;
      }
      // 2. sync from end
      // a (b c)
      // d e (b c)
      while (i <= e1 && i <= e2) {
        const n1 = c1[e1];
        const n2 = (c2[e2] = optimized
          ? cloneIfMounted(c2[e2])
          : normalizeVNode(c2[e2]));
        if (isSameVNodeType(n1, n2)) {
          patch(n1, n2, container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
        }
        else {
          break;
        }
        e1--;
        e2--;
      }
      // 3. common sequence + mount
      // (a b)
      // (a b) c
      // i = 2, e1 = 1, e2 = 2
      // (a b)
      // c (a b)
      // i = 0, e1 = -1, e2 = 0
      if (i > e1) {
        if (i <= e2) {
          const nextPos = e2 + 1;
          const anchor = nextPos < l2 ? c2[nextPos].el : parentAnchor;
          while (i <= e2) {
            patch(null, (c2[i] = optimized
              ? cloneIfMounted(c2[i])
              : normalizeVNode(c2[i])), container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
            i++;
          }
        }
      }
        // 4. common sequence + unmount
        // (a b) c
        // (a b)
        // i = 2, e1 = 2, e2 = 1
        // a (b c)
        // (b c)
      // i = 0, e1 = 0, e2 = -1
      else if (i > e2) {
        while (i <= e1) {
          unmount(c1[i], parentComponent, parentSuspense, true);
          i++;
        }
      }
        // 5. unknown sequence
        // [i ... e1 + 1]: a b [c d e] f g
        // [i ... e2 + 1]: a b [e d c h] f g
      // i = 2, e1 = 4, e2 = 5
      else {
        const s1 = i; // prev starting index
        const s2 = i; // next starting index
        // 5.1 build key:index map for newChildren
        const keyToNewIndexMap = new Map();
        for (i = s2; i <= e2; i++) {
          const nextChild = (c2[i] = optimized
            ? cloneIfMounted(c2[i])
            : normalizeVNode(c2[i]));
          if (nextChild.key != null) {
            if (keyToNewIndexMap.has(nextChild.key)) {
              warn(`Duplicate keys found during update:`, JSON.stringify(nextChild.key), `Make sure keys are unique.`);
            }
            keyToNewIndexMap.set(nextChild.key, i);
          }
        }
        // 5.2 loop through old children left to be patched and try to patch
        // matching nodes & remove nodes that are no longer present
        let j;
        let patched = 0;
        const toBePatched = e2 - s2 + 1;
        let moved = false;
        // used to track whether any node has moved
        let maxNewIndexSoFar = 0;
        // works as Map<newIndex, oldIndex>
        // Note that oldIndex is offset by +1
        // and oldIndex = 0 is a special value indicating the new node has
        // no corresponding old node.
        // used for determining longest stable subsequence
        const newIndexToOldIndexMap = new Array(toBePatched);
        for (i = 0; i < toBePatched; i++)
          newIndexToOldIndexMap[i] = 0;
        for (i = s1; i <= e1; i++) {
          const prevChild = c1[i];
          if (patched >= toBePatched) {
            // all new children have been patched so this can only be a removal
            unmount(prevChild, parentComponent, parentSuspense, true);
            continue;
          }
          let newIndex;
          if (prevChild.key != null) {
            newIndex = keyToNewIndexMap.get(prevChild.key);
          }
          else {
            // key-less node, try to locate a key-less node of the same type
            for (j = s2; j <= e2; j++) {
              if (newIndexToOldIndexMap[j - s2] === 0 &&
                isSameVNodeType(prevChild, c2[j])) {
                newIndex = j;
                break;
              }
            }
          }
          if (newIndex === undefined) {
            unmount(prevChild, parentComponent, parentSuspense, true);
          }
          else {
            newIndexToOldIndexMap[newIndex - s2] = i + 1;
            if (newIndex >= maxNewIndexSoFar) {
              maxNewIndexSoFar = newIndex;
            }
            else {
              moved = true;
            }
            patch(prevChild, c2[newIndex], container, null, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
            patched++;
          }
        }
        // 5.3 move and mount
        // generate longest stable subsequence only when nodes have moved
        const increasingNewIndexSequence = moved
          ? getSequence(newIndexToOldIndexMap)
          : EMPTY_ARR;
        j = increasingNewIndexSequence.length - 1;
        // looping backwards so that we can use last patched node as anchor
        for (i = toBePatched - 1; i >= 0; i--) {
          const nextIndex = s2 + i;
          const nextChild = c2[nextIndex];
          const anchor = nextIndex + 1 < l2 ? c2[nextIndex + 1].el : parentAnchor;
          if (newIndexToOldIndexMap[i] === 0) {
            // mount new
            patch(null, nextChild, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
          else if (moved) {
            // move if:
            // There is no stable subsequence (e.g. a reverse)
            // OR current node is not among the stable sequence
            if (j < 0 || i !== increasingNewIndexSequence[j]) {
              move(nextChild, container, anchor, 2 /* REORDER */);
            }
            else {
              j--;
            }
          }
        }
      }
    };
    const move = (vnode, container, anchor, moveType, parentSuspense = null) => {
      const { el, type, transition, children, shapeFlag } = vnode;
      if (shapeFlag & 6 /* COMPONENT */) {
        move(vnode.component.subTree, container, anchor, moveType);
        return;
      }
      if (shapeFlag & 128 /* SUSPENSE */) {
        vnode.suspense.move(container, anchor, moveType);
        return;
      }
      if (shapeFlag & 64 /* TELEPORT */) {
        type.move(vnode, container, anchor, internals);
        return;
      }
      if (type === Fragment) {
        hostInsert(el, container, anchor);
        for (let i = 0; i < children.length; i++) {
          move(children[i], container, anchor, moveType);
        }
        hostInsert(vnode.anchor, container, anchor);
        return;
      }
      if (type === Static) {
        moveStaticNode(vnode, container, anchor);
        return;
      }
      // single nodes
      const needTransition = moveType !== 2 /* REORDER */ &&
        shapeFlag & 1 /* ELEMENT */ &&
        transition;
      if (needTransition) {
        if (moveType === 0 /* ENTER */) {
          transition.beforeEnter(el);
          hostInsert(el, container, anchor);
          queuePostRenderEffect(() => transition.enter(el), parentSuspense);
        }
        else {
          const { leave, delayLeave, afterLeave } = transition;
          const remove = () => hostInsert(el, container, anchor);
          const performLeave = () => {
            leave(el, () => {
              remove();
              afterLeave && afterLeave();
            });
          };
          if (delayLeave) {
            delayLeave(el, remove, performLeave);
          }
          else {
            performLeave();
          }
        }
      }
      else {
        hostInsert(el, container, anchor);
      }
    };
    const unmount = (vnode, parentComponent, parentSuspense, doRemove = false, optimized = false) => {
      const { type, props, ref, children, dynamicChildren, shapeFlag, patchFlag, dirs } = vnode;
      // unset ref
      if (ref != null) {
        setRef(ref, null, parentSuspense, null);
      }
      if (shapeFlag & 256 /* COMPONENT_SHOULD_KEEP_ALIVE */) {
        parentComponent.ctx.deactivate(vnode);
        return;
      }
      const shouldInvokeDirs = shapeFlag & 1 /* ELEMENT */ && dirs;
      let vnodeHook;
      if ((vnodeHook = props && props.onVnodeBeforeUnmount)) {
        invokeVNodeHook(vnodeHook, parentComponent, vnode);
      }
      if (shapeFlag & 6 /* COMPONENT */) {
        unmountComponent(vnode.component, parentSuspense, doRemove);
      }
      else {
        if (shapeFlag & 128 /* SUSPENSE */) {
          vnode.suspense.unmount(parentSuspense, doRemove);
          return;
        }
        if (shouldInvokeDirs) {
          invokeDirectiveHook(vnode, null, parentComponent, 'beforeUnmount');
        }
        if (shapeFlag & 64 /* TELEPORT */) {
          vnode.type.remove(vnode, parentComponent, parentSuspense, optimized, internals, doRemove);
        }
        else if (dynamicChildren &&
          // #1153: fast path should not be taken for non-stable (v-for) fragments
          (type !== Fragment ||
            (patchFlag > 0 && patchFlag & 64 /* STABLE_FRAGMENT */))) {
          // fast path for block nodes: only need to unmount dynamic children.
          unmountChildren(dynamicChildren, parentComponent, parentSuspense, false, true);
        }
        else if ((type === Fragment &&
          (patchFlag & 128 /* KEYED_FRAGMENT */ ||
            patchFlag & 256 /* UNKEYED_FRAGMENT */)) ||
          (!optimized && shapeFlag & 16 /* ARRAY_CHILDREN */)) {
          unmountChildren(children, parentComponent, parentSuspense);
        }
        if (doRemove) {
          remove(vnode);
        }
      }
      if ((vnodeHook = props && props.onVnodeUnmounted) || shouldInvokeDirs) {
        queuePostRenderEffect(() => {
          vnodeHook && invokeVNodeHook(vnodeHook, parentComponent, vnode);
          shouldInvokeDirs &&
          invokeDirectiveHook(vnode, null, parentComponent, 'unmounted');
        }, parentSuspense);
      }
    };
    const remove = vnode => {
      const { type, el, anchor, transition } = vnode;
      if (type === Fragment) {
        removeFragment(el, anchor);
        return;
      }
      if (type === Static) {
        removeStaticNode(vnode);
        return;
      }
      const performRemove = () => {
        hostRemove(el);
        if (transition && !transition.persisted && transition.afterLeave) {
          transition.afterLeave();
        }
      };
      if (vnode.shapeFlag & 1 /* ELEMENT */ &&
        transition &&
        !transition.persisted) {
        const { leave, delayLeave } = transition;
        const performLeave = () => leave(el, performRemove);
        if (delayLeave) {
          delayLeave(vnode.el, performRemove, performLeave);
        }
        else {
          performLeave();
        }
      }
      else {
        performRemove();
      }
    };
    const removeFragment = (cur, end) => {
      // For fragments, directly remove all contained DOM nodes.
      // (fragment child nodes cannot have transition)
      let next;
      while (cur !== end) {
        next = hostNextSibling(cur);
        hostRemove(cur);
        cur = next;
      }
      hostRemove(end);
    };
    const unmountComponent = (instance, parentSuspense, doRemove) => {
      if (instance.type.__hmrId) {
        unregisterHMR(instance);
      }
      const { bum, effects, update, subTree, um } = instance;
      // beforeUnmount hook
      if (bum) {
        invokeArrayFns(bum);
      }
      if (effects) {
        for (let i = 0; i < effects.length; i++) {
          stop(effects[i]);
        }
      }
      // update may be null if a component is unmounted before its async
      // setup has resolved.
      if (update) {
        stop(update);
        unmount(subTree, instance, parentSuspense, doRemove);
      }
      // unmounted hook
      if (um) {
        queuePostRenderEffect(um, parentSuspense);
      }
      queuePostRenderEffect(() => {
        instance.isUnmounted = true;
      }, parentSuspense);
      // A component with async dep inside a pending suspense is unmounted before
      // its async dep resolves. This should remove the dep from the suspense, and
      // cause the suspense to resolve immediately if that was the last dep.
      if (parentSuspense &&
        parentSuspense.pendingBranch &&
        !parentSuspense.isUnmounted &&
        instance.asyncDep &&
        !instance.asyncResolved &&
        instance.suspenseId === parentSuspense.pendingId) {
        parentSuspense.deps--;
        if (parentSuspense.deps === 0) {
          parentSuspense.resolve();
        }
      }
      {
        devtoolsComponentRemoved(instance);
      }
    };
    const unmountChildren = (children, parentComponent, parentSuspense, doRemove = false, optimized = false, start = 0) => {
      for (let i = start; i < children.length; i++) {
        unmount(children[i], parentComponent, parentSuspense, doRemove, optimized);
      }
    };
    const getNextHostNode = vnode => {
      if (vnode.shapeFlag & 6 /* COMPONENT */) {
        return getNextHostNode(vnode.component.subTree);
      }
      if (vnode.shapeFlag & 128 /* SUSPENSE */) {
        return vnode.suspense.next();
      }
      return hostNextSibling((vnode.anchor || vnode.el));
    };
    const render = (vnode, container, isSVG) => {
      if (vnode == null) {
        if (container._vnode) {
          unmount(container._vnode, null, null, true);
        }
      }
      else {
        patch(container._vnode || null, vnode, container, null, null, null, isSVG);
      }
      flushPostFlushCbs();
      container._vnode = vnode;
    };
    const internals = {
      p: patch,
      um: unmount,
      m: move,
      r: remove,
      mt: mountComponent,
      mc: mountChildren,
      pc: patchChildren,
      pbc: patchBlockChildren,
      n: getNextHostNode,
      o: options
    };
    let hydrate;
    let hydrateNode;
    if (createHydrationFns) {
      [hydrate, hydrateNode] = createHydrationFns(internals);
    }
    return {
      render,
      hydrate,
      createApp: createAppAPI(render, hydrate)
    };
  }
  function invokeVNodeHook(hook, instance, vnode, prevVNode = null) {
    callWithAsyncErrorHandling(hook, instance, 7 /* VNODE_HOOK */, [
      vnode,
      prevVNode
    ]);
  }
  /**
   * #1156
   * When a component is HMR-enabled, we need to make sure that all static nodes
   * inside a block also inherit the DOM element from the previous tree so that
   * HMR updates (which are full updates) can retrieve the element for patching.
   *
   * #2080
   * Inside keyed `template` fragment static children, if a fragment is moved,
   * the children will always moved so that need inherit el form previous nodes
   * to ensure correct moved position.
   */
  function traverseStaticChildren(n1, n2, shallow = false) {
    const ch1 = n1.children;
    const ch2 = n2.children;
    if (isArray(ch1) && isArray(ch2)) {
      for (let i = 0; i < ch1.length; i++) {
        // this is only called in the optimized path so array children are
        // guaranteed to be vnodes
        const c1 = ch1[i];
        let c2 = ch2[i];
        if (c2.shapeFlag & 1 /* ELEMENT */ && !c2.dynamicChildren) {
          if (c2.patchFlag <= 0 || c2.patchFlag === 32 /* HYDRATE_EVENTS */) {
            c2 = ch2[i] = cloneIfMounted(ch2[i]);
            c2.el = c1.el;
          }
          if (!shallow)
            traverseStaticChildren(c1, c2);
        }
        // also inherit for comment nodes, but not placeholders (e.g. v-if which
        // would have received .el during block patch)
        if (c2.type === Comment && !c2.el) {
          c2.el = c1.el;
        }
      }
    }
  }
  // https://en.wikipedia.org/wiki/Longest_increasing_subsequence
  function getSequence(arr) {
    const p = arr.slice();
    const result = [0];
    let i, j, u, v, c;
    const len = arr.length;
    for (i = 0; i < len; i++) {
      const arrI = arr[i];
      if (arrI !== 0) {
        j = result[result.length - 1];
        if (arr[j] < arrI) {
          p[i] = j;
          result.push(i);
          continue;
        }
        u = 0;
        v = result.length - 1;
        while (u < v) {
          c = ((u + v) / 2) | 0;
          if (arr[result[c]] < arrI) {
            u = c + 1;
          }
          else {
            v = c;
          }
        }
        if (arrI < arr[result[u]]) {
          if (u > 0) {
            p[i] = result[u - 1];
          }
          result[u] = i;
        }
      }
    }
    u = result.length;
    v = result[u - 1];
    while (u-- > 0) {
      result[u] = v;
      v = p[v];
    }
    return result;
  }

  const isTeleport = (type) => type.__isTeleport;
  const isTeleportDisabled = (props) => props && (props.disabled || props.disabled === '');
  const isTargetSVG = (target) => typeof SVGElement !== 'undefined' && target instanceof SVGElement;
  const resolveTarget = (props, select) => {
    const targetSelector = props && props.to;
    if (isString(targetSelector)) {
      if (!select) {
        warn(`Current renderer does not support string target for Teleports. ` +
          `(missing querySelector renderer option)`);
        return null;
      }
      else {
        const target = select(targetSelector);
        if (!target) {
          warn(`Failed to locate Teleport target with selector "${targetSelector}". ` +
            `Note the target element must exist before the component is mounted - ` +
            `i.e. the target cannot be rendered by the component itself, and ` +
            `ideally should be outside of the entire Vue component tree.`);
        }
        return target;
      }
    }
    else {
      if (!targetSelector && !isTeleportDisabled(props)) {
        warn(`Invalid Teleport target: ${targetSelector}`);
      }
      return targetSelector;
    }
  };
  const TeleportImpl = {
    __isTeleport: true,
    process(n1, n2, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized, internals) {
      const { mc: mountChildren, pc: patchChildren, pbc: patchBlockChildren, o: { insert, querySelector, createText, createComment } } = internals;
      const disabled = isTeleportDisabled(n2.props);
      const { shapeFlag, children } = n2;
      // #3302
      // HMR updated, force full diff
      if (isHmrUpdating) {
        optimized = false;
        n2.dynamicChildren = null;
      }
      if (n1 == null) {
        // insert anchors in the main view
        const placeholder = (n2.el = createComment('teleport start')
        );
        const mainAnchor = (n2.anchor = createComment('teleport end')
        );
        insert(placeholder, container, anchor);
        insert(mainAnchor, container, anchor);
        const target = (n2.target = resolveTarget(n2.props, querySelector));
        const targetAnchor = (n2.targetAnchor = createText(''));
        if (target) {
          insert(targetAnchor, target);
          // #2652 we could be teleporting from a non-SVG tree into an SVG tree
          isSVG = isSVG || isTargetSVG(target);
        }
        else if (!disabled) {
          warn('Invalid Teleport target on mount:', target, `(${typeof target})`);
        }
        const mount = (container, anchor) => {
          // Teleport *always* has Array children. This is enforced in both the
          // compiler and vnode children normalization.
          if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
            mountChildren(children, container, anchor, parentComponent, parentSuspense, isSVG, slotScopeIds, optimized);
          }
        };
        if (disabled) {
          mount(container, mainAnchor);
        }
        else if (target) {
          mount(target, targetAnchor);
        }
      }
      else {
        // update content
        n2.el = n1.el;
        const mainAnchor = (n2.anchor = n1.anchor);
        const target = (n2.target = n1.target);
        const targetAnchor = (n2.targetAnchor = n1.targetAnchor);
        const wasDisabled = isTeleportDisabled(n1.props);
        const currentContainer = wasDisabled ? container : target;
        const currentAnchor = wasDisabled ? mainAnchor : targetAnchor;
        isSVG = isSVG || isTargetSVG(target);
        if (n2.dynamicChildren) {
          // fast path when the teleport happens to be a block root
          patchBlockChildren(n1.dynamicChildren, n2.dynamicChildren, currentContainer, parentComponent, parentSuspense, isSVG, slotScopeIds);
          // even in block tree mode we need to make sure all root-level nodes
          // in the teleport inherit previous DOM references so that they can
          // be moved in future patches.
          traverseStaticChildren(n1, n2, true);
        }
        else if (!optimized) {
          patchChildren(n1, n2, currentContainer, currentAnchor, parentComponent, parentSuspense, isSVG, slotScopeIds, false);
        }
        if (disabled) {
          if (!wasDisabled) {
            // enabled -> disabled
            // move into main container
            moveTeleport(n2, container, mainAnchor, internals, 1 /* TOGGLE */);
          }
        }
        else {
          // target changed
          if ((n2.props && n2.props.to) !== (n1.props && n1.props.to)) {
            const nextTarget = (n2.target = resolveTarget(n2.props, querySelector));
            if (nextTarget) {
              moveTeleport(n2, nextTarget, null, internals, 0 /* TARGET_CHANGE */);
            }
            else {
              warn('Invalid Teleport target on update:', target, `(${typeof target})`);
            }
          }
          else if (wasDisabled) {
            // disabled -> enabled
            // move into teleport target
            moveTeleport(n2, target, targetAnchor, internals, 1 /* TOGGLE */);
          }
        }
      }
    },
    remove(vnode, parentComponent, parentSuspense, optimized, { um: unmount, o: { remove: hostRemove } }, doRemove) {
      const { shapeFlag, children, anchor, targetAnchor, target, props } = vnode;
      if (target) {
        hostRemove(targetAnchor);
      }
      // an unmounted teleport should always remove its children if not disabled
      if (doRemove || !isTeleportDisabled(props)) {
        hostRemove(anchor);
        if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
          for (let i = 0; i < children.length; i++) {
            unmount(children[i], parentComponent, parentSuspense, true, optimized);
          }
        }
      }
    },
    move: moveTeleport,
    hydrate: hydrateTeleport
  };
  function moveTeleport(vnode, container, parentAnchor, { o: { insert }, m: move }, moveType = 2 /* REORDER */) {
    // move target anchor if this is a target change.
    if (moveType === 0 /* TARGET_CHANGE */) {
      insert(vnode.targetAnchor, container, parentAnchor);
    }
    const { el, anchor, shapeFlag, children, props } = vnode;
    const isReorder = moveType === 2 /* REORDER */;
    // move main view anchor if this is a re-order.
    if (isReorder) {
      insert(el, container, parentAnchor);
    }
    // if this is a re-order and teleport is enabled (content is in target)
    // do not move children. So the opposite is: only move children if this
    // is not a reorder, or the teleport is disabled
    if (!isReorder || isTeleportDisabled(props)) {
      // Teleport has either Array children or no children.
      if (shapeFlag & 16 /* ARRAY_CHILDREN */) {
        for (let i = 0; i < children.length; i++) {
          move(children[i], container, parentAnchor, 2 /* REORDER */);
        }
      }
    }
    // move main view anchor if this is a re-order.
    if (isReorder) {
      insert(anchor, container, parentAnchor);
    }
  }
  function hydrateTeleport(node, vnode, parentComponent, parentSuspense, slotScopeIds, optimized, { o: { nextSibling, parentNode, querySelector } }, hydrateChildren) {
    const target = (vnode.target = resolveTarget(vnode.props, querySelector));
    if (target) {
      // if multiple teleports rendered to the same target element, we need to
      // pick up from where the last teleport finished instead of the first node
      const targetNode = target._lpa || target.firstChild;
      if (vnode.shapeFlag & 16 /* ARRAY_CHILDREN */) {
        if (isTeleportDisabled(vnode.props)) {
          vnode.anchor = hydrateChildren(nextSibling(node), vnode, parentNode(node), parentComponent, parentSuspense, slotScopeIds, optimized);
          vnode.targetAnchor = targetNode;
        }
        else {
          vnode.anchor = nextSibling(node);
          vnode.targetAnchor = hydrateChildren(targetNode, vnode, target, parentComponent, parentSuspense, slotScopeIds, optimized);
        }
        target._lpa =
          vnode.targetAnchor && nextSibling(vnode.targetAnchor);
      }
    }
    return vnode.anchor && nextSibling(vnode.anchor);
  }
  // Force-casted public typing for h and TSX props inference
  const Teleport = TeleportImpl;

  const COMPONENTS = 'components';
  const DIRECTIVES = 'directives';
  /**
   * @private
   */
  function resolveComponent(name, maybeSelfReference) {
    return resolveAsset(COMPONENTS, name, true, maybeSelfReference) || name;
  }
  const NULL_DYNAMIC_COMPONENT = Symbol();
  /**
   * @private
   */
  function resolveDynamicComponent(component) {
    if (isString(component)) {
      return resolveAsset(COMPONENTS, component, false) || component;
    }
    else {
      // invalid types will fallthrough to createVNode and raise warning
      return (component || NULL_DYNAMIC_COMPONENT);
    }
  }
  /**
   * @private
   */
  function resolveDirective(name) {
    return resolveAsset(DIRECTIVES, name);
  }
  // implementation
  function resolveAsset(type, name, warnMissing = true, maybeSelfReference = false) {
    const instance = currentRenderingInstance || currentInstance;
    if (instance) {
      const Component = instance.type;
      // explicit self name has highest priority
      if (type === COMPONENTS) {
        const selfName = getComponentName(Component);
        if (selfName &&
          (selfName === name ||
            selfName === camelize(name) ||
            selfName === capitalize(camelize(name)))) {
          return Component;
        }
      }
      const res =
        // local registration
        // check instance[type] first for components with mixin or extends.
        resolve(instance[type] || Component[type], name) ||
        // global registration
        resolve(instance.appContext[type], name);
      if (!res && maybeSelfReference) {
        // fallback to implicit self-reference
        return Component;
      }
      if (warnMissing && !res) {
        warn(`Failed to resolve ${type.slice(0, -1)}: ${name}`);
      }
      return res;
    }
    else {
      warn(`resolve${capitalize(type.slice(0, -1))} ` +
        `can only be used in render() or setup().`);
    }
  }
  function resolve(registry, name) {
    return (registry &&
      (registry[name] ||
        registry[camelize(name)] ||
        registry[capitalize(camelize(name))]));
  }

  const Fragment = Symbol('Fragment' );
  const Text = Symbol('Text' );
  const Comment = Symbol('Comment' );
  const Static = Symbol('Static' );
  // Since v-if and v-for are the two possible ways node structure can dynamically
  // change, once we consider v-if branches and each v-for fragment a block, we
  // can divide a template into nested blocks, and within each block the node
  // structure would be stable. This allows us to skip most children diffing
  // and only worry about the dynamic nodes (indicated by patch flags).
  const blockStack = [];
  let currentBlock = null;
  /**
   * Open a block.
   * This must be called before `createBlock`. It cannot be part of `createBlock`
   * because the children of the block are evaluated before `createBlock` itself
   * is called. The generated code typically looks like this:
   *
   * ```js
   * function render() {
   *   return (openBlock(),createBlock('div', null, [...]))
   * }
   * ```
   * disableTracking is true when creating a v-for fragment block, since a v-for
   * fragment always diffs its children.
   *
   * @private
   */
  function openBlock(disableTracking = false) {
    blockStack.push((currentBlock = disableTracking ? null : []));
  }
  function closeBlock() {
    blockStack.pop();
    currentBlock = blockStack[blockStack.length - 1] || null;
  }
  // Whether we should be tracking dynamic child nodes inside a block.
  // Only tracks when this value is > 0
  // We are not using a simple boolean because this value may need to be
  // incremented/decremented by nested usage of v-once (see below)
  let shouldTrack$1 = 1;
  /**
   * Block tracking sometimes needs to be disabled, for example during the
   * creation of a tree that needs to be cached by v-once. The compiler generates
   * code like this:
   *
   * ``` js
   * _cache[1] || (
   *   setBlockTracking(-1),
   *   _cache[1] = createVNode(...),
   *   setBlockTracking(1),
   *   _cache[1]
   * )
   * ```
   *
   * @private
   */
  function setBlockTracking(value) {
    shouldTrack$1 += value;
  }
  /**
   * Create a block root vnode. Takes the same exact arguments as `createVNode`.
   * A block root keeps track of dynamic nodes within the block in the
   * `dynamicChildren` array.
   *
   * @private
   */
  function createBlock(type, props, children, patchFlag, dynamicProps) {
    const vnode = createVNode(type, props, children, patchFlag, dynamicProps, true /* isBlock: prevent a block from tracking itself */);
    // save current block children on the block vnode
    vnode.dynamicChildren = currentBlock || EMPTY_ARR;
    // close block
    closeBlock();
    // a block is always going to be patched, so track it as a child of its
    // parent block
    if (shouldTrack$1 > 0 && currentBlock) {
      currentBlock.push(vnode);
    }
    return vnode;
  }
  function isVNode(value) {
    return value ? value.__v_isVNode === true : false;
  }
  function isSameVNodeType(n1, n2) {
    if (n2.shapeFlag & 6 /* COMPONENT */ &&
      hmrDirtyComponents.has(n2.type)) {
      // HMR only: if the component has been hot-updated, force a reload.
      return false;
    }
    return n1.type === n2.type && n1.key === n2.key;
  }
  let vnodeArgsTransformer;
  /**
   * Internal API for registering an arguments transform for createVNode
   * used for creating stubs in the test-utils
   * It is *internal* but needs to be exposed for test-utils to pick up proper
   * typings
   */
  function transformVNodeArgs(transformer) {
    vnodeArgsTransformer = transformer;
  }
  const createVNodeWithArgsTransform = (...args) => {
    return _createVNode(...(vnodeArgsTransformer
      ? vnodeArgsTransformer(args, currentRenderingInstance)
      : args));
  };
  const InternalObjectKey = `__vInternal`;
  const normalizeKey = ({ key }) => key != null ? key : null;
  const normalizeRef = ({ ref }) => {
    return (ref != null
      ? isString(ref) || isRef(ref) || isFunction(ref)
        ? { i: currentRenderingInstance, r: ref }
        : ref
      : null);
  };
  const createVNode = (createVNodeWithArgsTransform
  );
  function _createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null, isBlockNode = false) {
    if (!type || type === NULL_DYNAMIC_COMPONENT) {
      if (!type) {
        warn(`Invalid vnode type when creating vnode: ${type}.`);
      }
      type = Comment;
    }
    if (isVNode(type)) {
      // createVNode receiving an existing vnode. This happens in cases like
      // <component :is="vnode"/>
      // #2078 make sure to merge refs during the clone instead of overwriting it
      const cloned = cloneVNode(type, props, true /* mergeRef: true */);
      if (children) {
        normalizeChildren(cloned, children);
      }
      return cloned;
    }
    // class component normalization.
    if (isClassComponent(type)) {
      type = type.__vccOpts;
    }
    // class & style normalization.
    if (props) {
      // for reactive or proxy objects, we need to clone it to enable mutation.
      if (isProxy(props) || InternalObjectKey in props) {
        props = extend({}, props);
      }
      let { class: klass, style } = props;
      if (klass && !isString(klass)) {
        props.class = normalizeClass(klass);
      }
      if (isObject(style)) {
        // reactive state objects need to be cloned since they are likely to be
        // mutated
        if (isProxy(style) && !isArray(style)) {
          style = extend({}, style);
        }
        props.style = normalizeStyle(style);
      }
    }
    // encode the vnode type information into a bitmap
    const shapeFlag = isString(type)
      ? 1 /* ELEMENT */
      : isSuspense(type)
        ? 128 /* SUSPENSE */
        : isTeleport(type)
          ? 64 /* TELEPORT */
          : isObject(type)
            ? 4 /* STATEFUL_COMPONENT */
            : isFunction(type)
              ? 2 /* FUNCTIONAL_COMPONENT */
              : 0;
    if (shapeFlag & 4 /* STATEFUL_COMPONENT */ && isProxy(type)) {
      type = toRaw(type);
      warn(`Vue received a Component which was made a reactive object. This can ` +
        `lead to unnecessary performance overhead, and should be avoided by ` +
        `marking the component with \`markRaw\` or using \`shallowRef\` ` +
        `instead of \`ref\`.`, `\nComponent that was made reactive: `, type);
    }
    const vnode = {
      __v_isVNode: true,
      ["__v_skip" /* SKIP */]: true,
      type,
      props,
      key: props && normalizeKey(props),
      ref: props && normalizeRef(props),
      scopeId: currentScopeId,
      slotScopeIds: null,
      children: null,
      component: null,
      suspense: null,
      ssContent: null,
      ssFallback: null,
      dirs: null,
      transition: null,
      el: null,
      anchor: null,
      target: null,
      targetAnchor: null,
      staticCount: 0,
      shapeFlag,
      patchFlag,
      dynamicProps,
      dynamicChildren: null,
      appContext: null
    };
    // validate key
    if (vnode.key !== vnode.key) {
      warn(`VNode created with invalid key (NaN). VNode type:`, vnode.type);
    }
    normalizeChildren(vnode, children);
    // normalize suspense children
    if (shapeFlag & 128 /* SUSPENSE */) {
      const { content, fallback } = normalizeSuspenseChildren(vnode);
      vnode.ssContent = content;
      vnode.ssFallback = fallback;
    }
    if (shouldTrack$1 > 0 &&
      // avoid a block node from tracking itself
      !isBlockNode &&
      // has current parent block
      currentBlock &&
      // presence of a patch flag indicates this node needs patching on updates.
      // component nodes also should always be patched, because even if the
      // component doesn't need to update, it needs to persist the instance on to
      // the next vnode so that it can be properly unmounted later.
      (patchFlag > 0 || shapeFlag & 6 /* COMPONENT */) &&
      // the EVENTS flag is only for hydration and if it is the only flag, the
      // vnode should not be considered dynamic due to handler caching.
      patchFlag !== 32 /* HYDRATE_EVENTS */) {
      currentBlock.push(vnode);
    }
    return vnode;
  }
  function cloneVNode(vnode, extraProps, mergeRef = false) {
    // This is intentionally NOT using spread or extend to avoid the runtime
    // key enumeration cost.
    const { props, ref, patchFlag, children } = vnode;
    const mergedProps = extraProps ? mergeProps(props || {}, extraProps) : props;
    return {
      __v_isVNode: true,
      ["__v_skip" /* SKIP */]: true,
      type: vnode.type,
      props: mergedProps,
      key: mergedProps && normalizeKey(mergedProps),
      ref: extraProps && extraProps.ref
        ? // #2078 in the case of <component :is="vnode" ref="extra"/>
        // if the vnode itself already has a ref, cloneVNode will need to merge
        // the refs so the single vnode can be set on multiple refs
        mergeRef && ref
          ? isArray(ref)
          ? ref.concat(normalizeRef(extraProps))
          : [ref, normalizeRef(extraProps)]
          : normalizeRef(extraProps)
        : ref,
      scopeId: vnode.scopeId,
      slotScopeIds: vnode.slotScopeIds,
      children: patchFlag === -1 /* HOISTED */ && isArray(children)
        ? children.map(deepCloneVNode)
        : children,
      target: vnode.target,
      targetAnchor: vnode.targetAnchor,
      staticCount: vnode.staticCount,
      shapeFlag: vnode.shapeFlag,
      // if the vnode is cloned with extra props, we can no longer assume its
      // existing patch flag to be reliable and need to add the FULL_PROPS flag.
      // note: perserve flag for fragments since they use the flag for children
      // fast paths only.
      patchFlag: extraProps && vnode.type !== Fragment
        ? patchFlag === -1 // hoisted node
          ? 16 /* FULL_PROPS */
          : patchFlag | 16 /* FULL_PROPS */
        : patchFlag,
      dynamicProps: vnode.dynamicProps,
      dynamicChildren: vnode.dynamicChildren,
      appContext: vnode.appContext,
      dirs: vnode.dirs,
      transition: vnode.transition,
      // These should technically only be non-null on mounted VNodes. However,
      // they *should* be copied for kept-alive vnodes. So we just always copy
      // them since them being non-null during a mount doesn't affect the logic as
      // they will simply be overwritten.
      component: vnode.component,
      suspense: vnode.suspense,
      ssContent: vnode.ssContent && cloneVNode(vnode.ssContent),
      ssFallback: vnode.ssFallback && cloneVNode(vnode.ssFallback),
      el: vnode.el,
      anchor: vnode.anchor
    };
  }
  /**
   * Dev only, for HMR of hoisted vnodes reused in v-for
   * https://github.com/vitejs/vite/issues/2022
   */
  function deepCloneVNode(vnode) {
    const cloned = cloneVNode(vnode);
    if (isArray(vnode.children)) {
      cloned.children = vnode.children.map(deepCloneVNode);
    }
    return cloned;
  }
  /**
   * @private
   */
  function createTextVNode(text = ' ', flag = 0) {
    return createVNode(Text, null, text, flag);
  }
  /**
   * @private
   */
  function createStaticVNode(content, numberOfNodes) {
    // A static vnode can contain multiple stringified elements, and the number
    // of elements is necessary for hydration.
    const vnode = createVNode(Static, null, content);
    vnode.staticCount = numberOfNodes;
    return vnode;
  }
  /**
   * @private
   */
  function createCommentVNode(text = '',
                              // when used as the v-else branch, the comment node must be created as a
                              // block to ensure correct updates.
                              asBlock = false) {
    return asBlock
      ? (openBlock(), createBlock(Comment, null, text))
      : createVNode(Comment, null, text);
  }
  function normalizeVNode(child) {
    if (child == null || typeof child === 'boolean') {
      // empty placeholder
      return createVNode(Comment);
    }
    else if (isArray(child)) {
      // fragment
      return createVNode(Fragment, null, child);
    }
    else if (typeof child === 'object') {
      // already vnode, this should be the most common since compiled templates
      // always produce all-vnode children arrays
      return child.el === null ? child : cloneVNode(child);
    }
    else {
      // strings and numbers
      return createVNode(Text, null, String(child));
    }
  }
  // optimized normalization for template-compiled render fns
  function cloneIfMounted(child) {
    return child.el === null ? child : cloneVNode(child);
  }
  function normalizeChildren(vnode, children) {
    let type = 0;
    const { shapeFlag } = vnode;
    if (children == null) {
      children = null;
    }
    else if (isArray(children)) {
      type = 16 /* ARRAY_CHILDREN */;
    }
    else if (typeof children === 'object') {
      if (shapeFlag & 1 /* ELEMENT */ || shapeFlag & 64 /* TELEPORT */) {
        // Normalize slot to plain children for plain element and Teleport
        const slot = children.default;
        if (slot) {
          // _c marker is added by withCtx() indicating this is a compiled slot
          slot._c && setCompiledSlotRendering(1);
          normalizeChildren(vnode, slot());
          slot._c && setCompiledSlotRendering(-1);
        }
        return;
      }
      else {
        type = 32 /* SLOTS_CHILDREN */;
        const slotFlag = children._;
        if (!slotFlag && !(InternalObjectKey in children)) {
          children._ctx = currentRenderingInstance;
        }
        else if (slotFlag === 3 /* FORWARDED */ && currentRenderingInstance) {
          // a child component receives forwarded slots from the parent.
          // its slot type is determined by its parent's slot type.
          if (currentRenderingInstance.vnode.patchFlag & 1024 /* DYNAMIC_SLOTS */) {
            children._ = 2 /* DYNAMIC */;
            vnode.patchFlag |= 1024 /* DYNAMIC_SLOTS */;
          }
          else {
            children._ = 1 /* STABLE */;
          }
        }
      }
    }
    else if (isFunction(children)) {
      children = { default: children, _ctx: currentRenderingInstance };
      type = 32 /* SLOTS_CHILDREN */;
    }
    else {
      children = String(children);
      // force teleport children to array so it can be moved around
      if (shapeFlag & 64 /* TELEPORT */) {
        type = 16 /* ARRAY_CHILDREN */;
        children = [createTextVNode(children)];
      }
      else {
        type = 8 /* TEXT_CHILDREN */;
      }
    }
    vnode.children = children;
    vnode.shapeFlag |= type;
  }
  function mergeProps(...args) {
    const ret = extend({}, args[0]);
    for (let i = 1; i < args.length; i++) {
      const toMerge = args[i];
      for (const key in toMerge) {
        if (key === 'class') {
          if (ret.class !== toMerge.class) {
            ret.class = normalizeClass([ret.class, toMerge.class]);
          }
        }
        else if (key === 'style') {
          ret.style = normalizeStyle([ret.style, toMerge.style]);
        }
        else if (isOn(key)) {
          const existing = ret[key];
          const incoming = toMerge[key];
          if (existing !== incoming) {
            ret[key] = existing
              ? [].concat(existing, toMerge[key])
              : incoming;
          }
        }
        else if (key !== '') {
          ret[key] = toMerge[key];
        }
      }
    }
    return ret;
  }

  function provide(key, value) {
    if (!currentInstance) {
      {
        warn(`provide() can only be used inside setup().`);
      }
    }
    else {
      let provides = currentInstance.provides;
      // by default an instance inherits its parent's provides object
      // but when it needs to provide values of its own, it creates its
      // own provides object using parent provides object as prototype.
      // this way in `inject` we can simply look up injections from direct
      // parent and let the prototype chain do the work.
      const parentProvides = currentInstance.parent && currentInstance.parent.provides;
      if (parentProvides === provides) {
        provides = currentInstance.provides = Object.create(parentProvides);
      }
      // TS doesn't allow symbol as index type
      provides[key] = value;
    }
  }
  function inject(key, defaultValue, treatDefaultAsFactory = false) {
    // fallback to `currentRenderingInstance` so that this can be called in
    // a functional component
    const instance = currentInstance || currentRenderingInstance;
    if (instance) {
      // #2400
      // to support `app.use` plugins,
      // fallback to appContext's `provides` if the intance is at root
      const provides = instance.parent == null
        ? instance.vnode.appContext && instance.vnode.appContext.provides
        : instance.parent.provides;
      if (provides && key in provides) {
        // TS doesn't allow symbol as index type
        return provides[key];
      }
      else if (arguments.length > 1) {
        return treatDefaultAsFactory && isFunction(defaultValue)
          ? defaultValue()
          : defaultValue;
      }
      else {
        warn(`injection "${String(key)}" not found.`);
      }
    }
    else {
      warn(`inject() can only be used inside setup() or functional components.`);
    }
  }

  function createDuplicateChecker() {
    const cache = Object.create(null);
    return (type, key) => {
      if (cache[key]) {
        warn(`${type} property "${key}" is already defined in ${cache[key]}.`);
      }
      else {
        cache[key] = type;
      }
    };
  }
  let shouldCacheAccess = true;
  function applyOptions(instance, options, deferredData = [], deferredWatch = [], deferredProvide = [], asMixin = false) {
    const {
      // composition
      mixins, extends: extendsOptions,
      // state
      data: dataOptions, computed: computedOptions, methods, watch: watchOptions, provide: provideOptions, inject: injectOptions,
      // assets
      components, directives,
      // lifecycle
      beforeMount, mounted, beforeUpdate, updated, activated, deactivated, beforeDestroy, beforeUnmount, destroyed, unmounted, render, renderTracked, renderTriggered, errorCaptured,
      // public API
      expose } = options;
    const publicThis = instance.proxy;
    const ctx = instance.ctx;
    const globalMixins = instance.appContext.mixins;
    if (asMixin && render && instance.render === NOOP) {
      instance.render = render;
    }
    // applyOptions is called non-as-mixin once per instance
    if (!asMixin) {
      shouldCacheAccess = false;
      callSyncHook('beforeCreate', "bc" /* BEFORE_CREATE */, options, instance, globalMixins);
      shouldCacheAccess = true;
      // global mixins are applied first
      applyMixins(instance, globalMixins, deferredData, deferredWatch, deferredProvide);
    }
    // extending a base component...
    if (extendsOptions) {
      applyOptions(instance, extendsOptions, deferredData, deferredWatch, deferredProvide, true);
    }
    // local mixins
    if (mixins) {
      applyMixins(instance, mixins, deferredData, deferredWatch, deferredProvide);
    }
    const checkDuplicateProperties = createDuplicateChecker() ;
    {
      const [propsOptions] = instance.propsOptions;
      if (propsOptions) {
        for (const key in propsOptions) {
          checkDuplicateProperties("Props" /* PROPS */, key);
        }
      }
    }
    // options initialization order (to be consistent with Vue 2):
    // - props (already done outside of this function)
    // - inject
    // - methods
    // - data (deferred since it relies on `this` access)
    // - computed
    // - watch (deferred since it relies on `this` access)
    if (injectOptions) {
      if (isArray(injectOptions)) {
        for (let i = 0; i < injectOptions.length; i++) {
          const key = injectOptions[i];
          ctx[key] = inject(key);
          {
            checkDuplicateProperties("Inject" /* INJECT */, key);
          }
        }
      }
      else {
        for (const key in injectOptions) {
          const opt = injectOptions[key];
          if (isObject(opt)) {
            ctx[key] = inject(opt.from || key, opt.default, true /* treat default function as factory */);
          }
          else {
            ctx[key] = inject(opt);
          }
          {
            checkDuplicateProperties("Inject" /* INJECT */, key);
          }
        }
      }
    }
    if (methods) {
      for (const key in methods) {
        const methodHandler = methods[key];
        if (isFunction(methodHandler)) {
          // In dev mode, we use the `createRenderContext` function to define methods to the proxy target,
          // and those are read-only but reconfigurable, so it needs to be redefined here
          {
            Object.defineProperty(ctx, key, {
              value: methodHandler.bind(publicThis),
              configurable: true,
              enumerable: true,
              writable: true
            });
          }
          {
            checkDuplicateProperties("Methods" /* METHODS */, key);
          }
        }
        else {
          warn(`Method "${key}" has type "${typeof methodHandler}" in the component definition. ` +
            `Did you reference the function correctly?`);
        }
      }
    }
    if (!asMixin) {
      if (deferredData.length) {
        deferredData.forEach(dataFn => resolveData(instance, dataFn, publicThis));
      }
      if (dataOptions) {
        // @ts-ignore dataOptions is not fully type safe
        resolveData(instance, dataOptions, publicThis);
      }
      {
        const rawData = toRaw(instance.data);
        for (const key in rawData) {
          checkDuplicateProperties("Data" /* DATA */, key);
          // expose data on ctx during dev
          if (key[0] !== '$' && key[0] !== '_') {
            Object.defineProperty(ctx, key, {
              configurable: true,
              enumerable: true,
              get: () => rawData[key],
              set: NOOP
            });
          }
        }
      }
    }
    else if (dataOptions) {
      deferredData.push(dataOptions);
    }
    if (computedOptions) {
      for (const key in computedOptions) {
        const opt = computedOptions[key];
        const get = isFunction(opt)
          ? opt.bind(publicThis, publicThis)
          : isFunction(opt.get)
            ? opt.get.bind(publicThis, publicThis)
            : NOOP;
        if (get === NOOP) {
          warn(`Computed property "${key}" has no getter.`);
        }
        const set = !isFunction(opt) && isFunction(opt.set)
          ? opt.set.bind(publicThis)
          : () => {
            warn(`Write operation failed: computed property "${key}" is readonly.`);
          }
        ;
        const c = computed$1({
          get,
          set
        });
        Object.defineProperty(ctx, key, {
          enumerable: true,
          configurable: true,
          get: () => c.value,
          set: v => (c.value = v)
        });
        {
          checkDuplicateProperties("Computed" /* COMPUTED */, key);
        }
      }
    }
    if (watchOptions) {
      deferredWatch.push(watchOptions);
    }
    if (!asMixin && deferredWatch.length) {
      deferredWatch.forEach(watchOptions => {
        for (const key in watchOptions) {
          createWatcher(watchOptions[key], ctx, publicThis, key);
        }
      });
    }
    if (provideOptions) {
      deferredProvide.push(provideOptions);
    }
    if (!asMixin && deferredProvide.length) {
      deferredProvide.forEach(provideOptions => {
        const provides = isFunction(provideOptions)
          ? provideOptions.call(publicThis)
          : provideOptions;
        Reflect.ownKeys(provides).forEach(key => {
          provide(key, provides[key]);
        });
      });
    }
    // asset options.
    // To reduce memory usage, only components with mixins or extends will have
    // resolved asset registry attached to instance.
    if (asMixin) {
      if (components) {
        extend(instance.components ||
          (instance.components = extend({}, instance.type.components)), components);
      }
      if (directives) {
        extend(instance.directives ||
          (instance.directives = extend({}, instance.type.directives)), directives);
      }
    }
    // lifecycle options
    if (!asMixin) {
      callSyncHook('created', "c" /* CREATED */, options, instance, globalMixins);
    }
    if (beforeMount) {
      onBeforeMount(beforeMount.bind(publicThis));
    }
    if (mounted) {
      onMounted(mounted.bind(publicThis));
    }
    if (beforeUpdate) {
      onBeforeUpdate(beforeUpdate.bind(publicThis));
    }
    if (updated) {
      onUpdated(updated.bind(publicThis));
    }
    if (activated) {
      onActivated(activated.bind(publicThis));
    }
    if (deactivated) {
      onDeactivated(deactivated.bind(publicThis));
    }
    if (errorCaptured) {
      onErrorCaptured(errorCaptured.bind(publicThis));
    }
    if (renderTracked) {
      onRenderTracked(renderTracked.bind(publicThis));
    }
    if (renderTriggered) {
      onRenderTriggered(renderTriggered.bind(publicThis));
    }
    if (beforeDestroy) {
      warn(`\`beforeDestroy\` has been renamed to \`beforeUnmount\`.`);
    }
    if (beforeUnmount) {
      onBeforeUnmount(beforeUnmount.bind(publicThis));
    }
    if (destroyed) {
      warn(`\`destroyed\` has been renamed to \`unmounted\`.`);
    }
    if (unmounted) {
      onUnmounted(unmounted.bind(publicThis));
    }
    if (isArray(expose)) {
      if (!asMixin) {
        if (expose.length) {
          const exposed = instance.exposed || (instance.exposed = proxyRefs({}));
          expose.forEach(key => {
            exposed[key] = toRef(publicThis, key);
          });
        }
        else if (!instance.exposed) {
          instance.exposed = EMPTY_OBJ;
        }
      }
      else {
        warn(`The \`expose\` option is ignored when used in mixins.`);
      }
    }
  }
  function callSyncHook(name, type, options, instance, globalMixins) {
    for (let i = 0; i < globalMixins.length; i++) {
      callHookWithMixinAndExtends(name, type, globalMixins[i], instance);
    }
    callHookWithMixinAndExtends(name, type, options, instance);
  }
  function callHookWithMixinAndExtends(name, type, options, instance) {
    const { extends: base, mixins } = options;
    const selfHook = options[name];
    if (base) {
      callHookWithMixinAndExtends(name, type, base, instance);
    }
    if (mixins) {
      for (let i = 0; i < mixins.length; i++) {
        callHookWithMixinAndExtends(name, type, mixins[i], instance);
      }
    }
    if (selfHook) {
      callWithAsyncErrorHandling(selfHook.bind(instance.proxy), instance, type);
    }
  }
  function applyMixins(instance, mixins, deferredData, deferredWatch, deferredProvide) {
    for (let i = 0; i < mixins.length; i++) {
      applyOptions(instance, mixins[i], deferredData, deferredWatch, deferredProvide, true);
    }
  }
  function resolveData(instance, dataFn, publicThis) {
    if (!isFunction(dataFn)) {
      warn(`The data option must be a function. ` +
        `Plain object usage is no longer supported.`);
    }
    shouldCacheAccess = false;
    const data = dataFn.call(publicThis, publicThis);
    shouldCacheAccess = true;
    if (isPromise(data)) {
      warn(`data() returned a Promise - note data() cannot be async; If you ` +
        `intend to perform data fetching before component renders, use ` +
        `async setup() + <Suspense>.`);
    }
    if (!isObject(data)) {
      warn(`data() should return an object.`);
    }
    else if (instance.data === EMPTY_OBJ) {
      instance.data = reactive(data);
    }
    else {
      // existing data: this is a mixin or extends.
      extend(instance.data, data);
    }
  }
  function createWatcher(raw, ctx, publicThis, key) {
    const getter = key.includes('.')
      ? createPathGetter(publicThis, key)
      : () => publicThis[key];
    if (isString(raw)) {
      const handler = ctx[raw];
      if (isFunction(handler)) {
        watch(getter, handler);
      }
      else {
        warn(`Invalid watch handler specified by key "${raw}"`, handler);
      }
    }
    else if (isFunction(raw)) {
      watch(getter, raw.bind(publicThis));
    }
    else if (isObject(raw)) {
      if (isArray(raw)) {
        raw.forEach(r => createWatcher(r, ctx, publicThis, key));
      }
      else {
        const handler = isFunction(raw.handler)
          ? raw.handler.bind(publicThis)
          : ctx[raw.handler];
        if (isFunction(handler)) {
          watch(getter, handler, raw);
        }
        else {
          warn(`Invalid watch handler specified by key "${raw.handler}"`, handler);
        }
      }
    }
    else {
      warn(`Invalid watch option: "${key}"`, raw);
    }
  }
  function createPathGetter(ctx, path) {
    const segments = path.split('.');
    return () => {
      let cur = ctx;
      for (let i = 0; i < segments.length && cur; i++) {
        cur = cur[segments[i]];
      }
      return cur;
    };
  }
  function resolveMergedOptions(instance) {
    const raw = instance.type;
    const { __merged, mixins, extends: extendsOptions } = raw;
    if (__merged)
      return __merged;
    const globalMixins = instance.appContext.mixins;
    if (!globalMixins.length && !mixins && !extendsOptions)
      return raw;
    const options = {};
    globalMixins.forEach(m => mergeOptions(options, m, instance));
    mergeOptions(options, raw, instance);
    return (raw.__merged = options);
  }
  function mergeOptions(to, from, instance) {
    const strats = instance.appContext.config.optionMergeStrategies;
    const { mixins, extends: extendsOptions } = from;
    extendsOptions && mergeOptions(to, extendsOptions, instance);
    mixins &&
    mixins.forEach((m) => mergeOptions(to, m, instance));
    for (const key in from) {
      if (strats && hasOwn(strats, key)) {
        to[key] = strats[key](to[key], from[key], instance.proxy, key);
      }
      else {
        to[key] = from[key];
      }
    }
  }

  /**
   * #2437 In Vue 3, functional components do not have a public instance proxy but
   * they exist in the internal parent chain. For code that relies on traversing
   * public $parent chains, skip functional ones and go to the parent instead.
   */
  const getPublicInstance = (i) => {
    if (!i)
      return null;
    if (isStatefulComponent(i))
      return i.exposed ? i.exposed : i.proxy;
    return getPublicInstance(i.parent);
  };
  const publicPropertiesMap = extend(Object.create(null), {
    $: i => i,
    $el: i => i.vnode.el,
    $data: i => i.data,
    $props: i => (shallowReadonly(i.props) ),
    $attrs: i => (shallowReadonly(i.attrs) ),
    $slots: i => (shallowReadonly(i.slots) ),
    $refs: i => (shallowReadonly(i.refs) ),
    $parent: i => getPublicInstance(i.parent),
    $root: i => getPublicInstance(i.root),
    $emit: i => i.emit,
    $options: i => (resolveMergedOptions(i) ),
    $forceUpdate: i => () => queueJob(i.update),
    $nextTick: i => nextTick.bind(i.proxy),
    $watch: i => (instanceWatch.bind(i) )
  });
  const PublicInstanceProxyHandlers = {
    get({ _: instance }, key) {
      const { ctx, setupState, data, props, accessCache, type, appContext } = instance;
      // let @vue/reactivity know it should never observe Vue public instances.
      if (key === "__v_skip" /* SKIP */) {
        return true;
      }
      // for internal formatters to know that this is a Vue instance
      if (key === '__isVue') {
        return true;
      }
      // data / props / ctx
      // This getter gets called for every property access on the render context
      // during render and is a major hotspot. The most expensive part of this
      // is the multiple hasOwn() calls. It's much faster to do a simple property
      // access on a plain object, so we use an accessCache object (with null
      // prototype) to memoize what access type a key corresponds to.
      let normalizedProps;
      if (key[0] !== '$') {
        const n = accessCache[key];
        if (n !== undefined) {
          switch (n) {
            case 0 /* SETUP */:
              return setupState[key];
            case 1 /* DATA */:
              return data[key];
            case 3 /* CONTEXT */:
              return ctx[key];
            case 2 /* PROPS */:
              return props[key];
            // default: just fallthrough
          }
        }
        else if (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) {
          accessCache[key] = 0 /* SETUP */;
          return setupState[key];
        }
        else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
          accessCache[key] = 1 /* DATA */;
          return data[key];
        }
        else if (
          // only cache other properties when instance has declared (thus stable)
          // props
          (normalizedProps = instance.propsOptions[0]) &&
          hasOwn(normalizedProps, key)) {
          accessCache[key] = 2 /* PROPS */;
          return props[key];
        }
        else if (ctx !== EMPTY_OBJ && hasOwn(ctx, key)) {
          accessCache[key] = 3 /* CONTEXT */;
          return ctx[key];
        }
        else if (shouldCacheAccess) {
          accessCache[key] = 4 /* OTHER */;
        }
      }
      const publicGetter = publicPropertiesMap[key];
      let cssModule, globalProperties;
      // public $xxx properties
      if (publicGetter) {
        if (key === '$attrs') {
          track(instance, "get" /* GET */, key);
          markAttrsAccessed();
        }
        return publicGetter(instance);
      }
      else if (
        // css module (injected by vue-loader)
        (cssModule = type.__cssModules) &&
        (cssModule = cssModule[key])) {
        return cssModule;
      }
      else if (ctx !== EMPTY_OBJ && hasOwn(ctx, key)) {
        // user may set custom properties to `this` that start with `$`
        accessCache[key] = 3 /* CONTEXT */;
        return ctx[key];
      }
      else if (
        // global properties
        ((globalProperties = appContext.config.globalProperties),
          hasOwn(globalProperties, key))) {
        return globalProperties[key];
      }
      else if (currentRenderingInstance &&
        (!isString(key) ||
          // #1091 avoid internal isRef/isVNode checks on component instance leading
          // to infinite warning loop
          key.indexOf('__v') !== 0)) {
        if (data !== EMPTY_OBJ &&
          (key[0] === '$' || key[0] === '_') &&
          hasOwn(data, key)) {
          warn(`Property ${JSON.stringify(key)} must be accessed via $data because it starts with a reserved ` +
            `character ("$" or "_") and is not proxied on the render context.`);
        }
        else if (instance === currentRenderingInstance) {
          warn(`Property ${JSON.stringify(key)} was accessed during render ` +
            `but is not defined on instance.`);
        }
      }
    },
    set({ _: instance }, key, value) {
      const { data, setupState, ctx } = instance;
      if (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) {
        setupState[key] = value;
      }
      else if (data !== EMPTY_OBJ && hasOwn(data, key)) {
        data[key] = value;
      }
      else if (hasOwn(instance.props, key)) {
        warn(`Attempting to mutate prop "${key}". Props are readonly.`, instance);
        return false;
      }
      if (key[0] === '$' && key.slice(1) in instance) {
        warn(`Attempting to mutate public property "${key}". ` +
          `Properties starting with $ are reserved and readonly.`, instance);
        return false;
      }
      else {
        if (key in instance.appContext.config.globalProperties) {
          Object.defineProperty(ctx, key, {
            enumerable: true,
            configurable: true,
            value
          });
        }
        else {
          ctx[key] = value;
        }
      }
      return true;
    },
    has({ _: { data, setupState, accessCache, ctx, appContext, propsOptions } }, key) {
      let normalizedProps;
      return (accessCache[key] !== undefined ||
        (data !== EMPTY_OBJ && hasOwn(data, key)) ||
        (setupState !== EMPTY_OBJ && hasOwn(setupState, key)) ||
        ((normalizedProps = propsOptions[0]) && hasOwn(normalizedProps, key)) ||
        hasOwn(ctx, key) ||
        hasOwn(publicPropertiesMap, key) ||
        hasOwn(appContext.config.globalProperties, key));
    }
  };
  {
    PublicInstanceProxyHandlers.ownKeys = (target) => {
      warn(`Avoid app logic that relies on enumerating keys on a component instance. ` +
        `The keys will be empty in production mode to avoid performance overhead.`);
      return Reflect.ownKeys(target);
    };
  }
  const RuntimeCompiledPublicInstanceProxyHandlers = extend({}, PublicInstanceProxyHandlers, {
    get(target, key) {
      // fast path for unscopables when using `with` block
      if (key === Symbol.unscopables) {
        return;
      }
      return PublicInstanceProxyHandlers.get(target, key, target);
    },
    has(_, key) {
      const has = key[0] !== '_' && !isGloballyWhitelisted(key);
      if (!has && PublicInstanceProxyHandlers.has(_, key)) {
        warn(`Property ${JSON.stringify(key)} should not start with _ which is a reserved prefix for Vue internals.`);
      }
      return has;
    }
  });
  // In dev mode, the proxy target exposes the same properties as seen on `this`
  // for easier console inspection. In prod mode it will be an empty object so
  // these properties definitions can be skipped.
  function createRenderContext(instance) {
    const target = {};
    // expose internal instance for proxy handlers
    Object.defineProperty(target, `_`, {
      configurable: true,
      enumerable: false,
      get: () => instance
    });
    // expose public properties
    Object.keys(publicPropertiesMap).forEach(key => {
      Object.defineProperty(target, key, {
        configurable: true,
        enumerable: false,
        get: () => publicPropertiesMap[key](instance),
        // intercepted by the proxy so no need for implementation,
        // but needed to prevent set errors
        set: NOOP
      });
    });
    // expose global properties
    const { globalProperties } = instance.appContext.config;
    Object.keys(globalProperties).forEach(key => {
      Object.defineProperty(target, key, {
        configurable: true,
        enumerable: false,
        get: () => globalProperties[key],
        set: NOOP
      });
    });
    return target;
  }
  // dev only
  function exposePropsOnRenderContext(instance) {
    const { ctx, propsOptions: [propsOptions] } = instance;
    if (propsOptions) {
      Object.keys(propsOptions).forEach(key => {
        Object.defineProperty(ctx, key, {
          enumerable: true,
          configurable: true,
          get: () => instance.props[key],
          set: NOOP
        });
      });
    }
  }
  // dev only
  function exposeSetupStateOnRenderContext(instance) {
    const { ctx, setupState } = instance;
    Object.keys(toRaw(setupState)).forEach(key => {
      if (key[0] === '$' || key[0] === '_') {
        warn(`setup() return property ${JSON.stringify(key)} should not start with "$" or "_" ` +
          `which are reserved prefixes for Vue internals.`);
        return;
      }
      Object.defineProperty(ctx, key, {
        enumerable: true,
        configurable: true,
        get: () => setupState[key],
        set: NOOP
      });
    });
  }

  const emptyAppContext = createAppContext();
  let uid$2 = 0;
  function createComponentInstance(vnode, parent, suspense) {
    const type = vnode.type;
    // inherit parent app context - or - if root, adopt from root vnode
    const appContext = (parent ? parent.appContext : vnode.appContext) || emptyAppContext;
    const instance = {
      uid: uid$2++,
      vnode,
      type,
      parent,
      appContext,
      root: null,
      next: null,
      subTree: null,
      update: null,
      render: null,
      proxy: null,
      exposed: null,
      withProxy: null,
      effects: null,
      provides: parent ? parent.provides : Object.create(appContext.provides),
      accessCache: null,
      renderCache: [],
      // local resovled assets
      components: null,
      directives: null,
      // resolved props and emits options
      propsOptions: normalizePropsOptions(type, appContext),
      emitsOptions: normalizeEmitsOptions(type, appContext),
      // emit
      emit: null,
      emitted: null,
      // props default value
      propsDefaults: EMPTY_OBJ,
      // state
      ctx: EMPTY_OBJ,
      data: EMPTY_OBJ,
      props: EMPTY_OBJ,
      attrs: EMPTY_OBJ,
      slots: EMPTY_OBJ,
      refs: EMPTY_OBJ,
      setupState: EMPTY_OBJ,
      setupContext: null,
      // suspense related
      suspense,
      suspenseId: suspense ? suspense.pendingId : 0,
      asyncDep: null,
      asyncResolved: false,
      // lifecycle hooks
      // not using enums here because it results in computed properties
      isMounted: false,
      isUnmounted: false,
      isDeactivated: false,
      bc: null,
      c: null,
      bm: null,
      m: null,
      bu: null,
      u: null,
      um: null,
      bum: null,
      da: null,
      a: null,
      rtg: null,
      rtc: null,
      ec: null
    };
    {
      instance.ctx = createRenderContext(instance);
    }
    instance.root = parent ? parent.root : instance;
    instance.emit = emit.bind(null, instance);
    return instance;
  }
  let currentInstance = null;
  const getCurrentInstance = () => currentInstance || currentRenderingInstance;
  const setCurrentInstance = (instance) => {
    currentInstance = instance;
  };
  const isBuiltInTag = /*#__PURE__*/ makeMap('slot,component');
  function validateComponentName(name, config) {
    const appIsNativeTag = config.isNativeTag || NO;
    if (isBuiltInTag(name) || appIsNativeTag(name)) {
      warn('Do not use built-in or reserved HTML elements as component id: ' + name);
    }
  }
  function isStatefulComponent(instance) {
    return instance.vnode.shapeFlag & 4 /* STATEFUL_COMPONENT */;
  }
  let isInSSRComponentSetup = false;
  function setupComponent(instance, isSSR = false) {
    isInSSRComponentSetup = isSSR;
    const { props, children } = instance.vnode;
    const isStateful = isStatefulComponent(instance);
    initProps(instance, props, isStateful, isSSR);
    initSlots(instance, children);
    const setupResult = isStateful
      ? setupStatefulComponent(instance, isSSR)
      : undefined;
    isInSSRComponentSetup = false;
    return setupResult;
  }
  function setupStatefulComponent(instance, isSSR) {
    const Component = instance.type;
    {
      if (Component.name) {
        validateComponentName(Component.name, instance.appContext.config);
      }
      if (Component.components) {
        const names = Object.keys(Component.components);
        for (let i = 0; i < names.length; i++) {
          validateComponentName(names[i], instance.appContext.config);
        }
      }
      if (Component.directives) {
        const names = Object.keys(Component.directives);
        for (let i = 0; i < names.length; i++) {
          validateDirectiveName(names[i]);
        }
      }
    }
    // 0. create render proxy property access cache
    instance.accessCache = Object.create(null);
    // 1. create public instance / render proxy
    // also mark it raw so it's never observed
    instance.proxy = new Proxy(instance.ctx, PublicInstanceProxyHandlers);
    {
      exposePropsOnRenderContext(instance);
    }
    // 2. call setup()
    const { setup } = Component;
    if (setup) {
      const setupContext = (instance.setupContext =
        setup.length > 1 ? createSetupContext(instance) : null);
      currentInstance = instance;
      pauseTracking();
      const setupResult = callWithErrorHandling(setup, instance, 0 /* SETUP_FUNCTION */, [shallowReadonly(instance.props) , setupContext]);
      resetTracking();
      currentInstance = null;
      if (isPromise(setupResult)) {
        if (isSSR) {
          // return the promise so server-renderer can wait on it
          return setupResult
            .then((resolvedResult) => {
              handleSetupResult(instance, resolvedResult, isSSR);
            })
            .catch(e => {
              handleError(e, instance, 0 /* SETUP_FUNCTION */);
            });
        }
        else {
          // async setup returned Promise.
          // bail here and wait for re-entry.
          instance.asyncDep = setupResult;
        }
      }
      else {
        handleSetupResult(instance, setupResult, isSSR);
      }
    }
    else {
      finishComponentSetup(instance, isSSR);
    }
  }
  function handleSetupResult(instance, setupResult, isSSR) {
    if (isFunction(setupResult)) {
      // setup returned an inline render function
      {
        instance.render = setupResult;
      }
    }
    else if (isObject(setupResult)) {
      if (isVNode(setupResult)) {
        warn(`setup() should not return VNodes directly - ` +
          `return a render function instead.`);
      }
      // setup returned bindings.
      // assuming a render function compiled from template is present.
      {
        instance.devtoolsRawSetupState = setupResult;
      }
      instance.setupState = proxyRefs(setupResult);
      {
        exposeSetupStateOnRenderContext(instance);
      }
    }
    else if (setupResult !== undefined) {
      warn(`setup() should return an object. Received: ${setupResult === null ? 'null' : typeof setupResult}`);
    }
    finishComponentSetup(instance, isSSR);
  }
  let compile;
  // dev only
  const isRuntimeOnly = () => !compile;
  /**
   * For runtime-dom to register the compiler.
   * Note the exported method uses any to avoid d.ts relying on the compiler types.
   */
  function registerRuntimeCompiler(_compile) {
    compile = _compile;
  }
  function finishComponentSetup(instance, isSSR) {
    const Component = instance.type;
    // template / render function normalization
    if (!instance.render) {
      // could be set from setup()
      if (compile && Component.template && !Component.render) {
        {
          startMeasure(instance, `compile`);
        }
        Component.render = compile(Component.template, {
          isCustomElement: instance.appContext.config.isCustomElement,
          delimiters: Component.delimiters
        });
        {
          endMeasure(instance, `compile`);
        }
      }
      instance.render = (Component.render || NOOP);
      // for runtime-compiled render functions using `with` blocks, the render
      // proxy used needs a different `has` handler which is more performant and
      // also only allows a whitelist of globals to fallthrough.
      if (instance.render._rc) {
        instance.withProxy = new Proxy(instance.ctx, RuntimeCompiledPublicInstanceProxyHandlers);
      }
    }
    // support for 2.x options
    {
      currentInstance = instance;
      pauseTracking();
      applyOptions(instance, Component);
      resetTracking();
      currentInstance = null;
    }
    // warn missing template/render
    // the runtime compilation of template in SSR is done by server-render
    if (!Component.render && instance.render === NOOP && !isSSR) {
      /* istanbul ignore if */
      if (!compile && Component.template) {
        warn(`Component provided template option but ` +
          `runtime compilation is not supported in this build of Vue.` +
          (` Use "vue.global.js" instead.`
          ) /* should not happen */);
      }
      else {
        warn(`Component is missing template or render function.`);
      }
    }
  }
  const attrHandlers = {
    get: (target, key) => {
      {
        markAttrsAccessed();
      }
      return target[key];
    },
    set: () => {
      warn(`setupContext.attrs is readonly.`);
      return false;
    },
    deleteProperty: () => {
      warn(`setupContext.attrs is readonly.`);
      return false;
    }
  };
  function createSetupContext(instance) {
    const expose = exposed => {
      if (instance.exposed) {
        warn(`expose() should be called only once per setup().`);
      }
      instance.exposed = proxyRefs(exposed);
    };
    {
      // We use getters in dev in case libs like test-utils overwrite instance
      // properties (overwrites should not be done in prod)
      return Object.freeze({
        get attrs() {
          return new Proxy(instance.attrs, attrHandlers);
        },
        get slots() {
          return shallowReadonly(instance.slots);
        },
        get emit() {
          return (event, ...args) => instance.emit(event, ...args);
        },
        expose
      });
    }
  }
  // record effects created during a component's setup() so that they can be
  // stopped when the component unmounts
  function recordInstanceBoundEffect(effect, instance = currentInstance) {
    if (instance) {
      (instance.effects || (instance.effects = [])).push(effect);
    }
  }
  const classifyRE = /(?:^|[-_])(\w)/g;
  const classify = (str) => str.replace(classifyRE, c => c.toUpperCase()).replace(/[-_]/g, '');
  function getComponentName(Component) {
    return isFunction(Component)
      ? Component.displayName || Component.name
      : Component.name;
  }
  /* istanbul ignore next */
  function formatComponentName(instance, Component, isRoot = false) {
    let name = getComponentName(Component);
    if (!name && Component.__file) {
      const match = Component.__file.match(/([^/\\]+)\.\w+$/);
      if (match) {
        name = match[1];
      }
    }
    if (!name && instance && instance.parent) {
      // try to infer the name based on reverse resolution
      const inferFromRegistry = (registry) => {
        for (const key in registry) {
          if (registry[key] === Component) {
            return key;
          }
        }
      };
      name =
        inferFromRegistry(instance.components ||
          instance.parent.type.components) || inferFromRegistry(instance.appContext.components);
    }
    return name ? classify(name) : isRoot ? `App` : `Anonymous`;
  }
  function isClassComponent(value) {
    return isFunction(value) && '__vccOpts' in value;
  }

  function computed$1(getterOrOptions) {
    const c = computed(getterOrOptions);
    recordInstanceBoundEffect(c.effect);
    return c;
  }

  // implementation
  function defineProps() {
    {
      warn(`defineProps() is a compiler-hint helper that is only usable inside ` +
        `<script setup> of a single file component. Its arguments should be ` +
        `compiled away and passing it at runtime has no effect.`);
    }
    return null;
  }
  // implementation
  function defineEmit() {
    {
      warn(`defineEmit() is a compiler-hint helper that is only usable inside ` +
        `<script setup> of a single file component. Its arguments should be ` +
        `compiled away and passing it at runtime has no effect.`);
    }
    return null;
  }
  function useContext() {
    const i = getCurrentInstance();
    if (!i) {
      warn(`useContext() called without active instance.`);
    }
    return i.setupContext || (i.setupContext = createSetupContext(i));
  }

  // Actual implementation
  function h(type, propsOrChildren, children) {
    const l = arguments.length;
    if (l === 2) {
      if (isObject(propsOrChildren) && !isArray(propsOrChildren)) {
        // single vnode without props
        if (isVNode(propsOrChildren)) {
          return createVNode(type, null, [propsOrChildren]);
        }
        // props without children
        return createVNode(type, propsOrChildren);
      }
      else {
        // omit props
        return createVNode(type, null, propsOrChildren);
      }
    }
    else {
      if (l > 3) {
        children = Array.prototype.slice.call(arguments, 2);
      }
      else if (l === 3 && isVNode(children)) {
        children = [children];
      }
      return createVNode(type, propsOrChildren, children);
    }
  }

  const ssrContextKey = Symbol(`ssrContext` );
  const useSSRContext = () => {
    {
      warn(`useSSRContext() is not supported in the global build.`);
    }
  };

  function initCustomFormatter() {
    /* eslint-disable no-restricted-globals */
    if (typeof window === 'undefined') {
      return;
    }
    const vueStyle = { style: 'color:#3ba776' };
    const numberStyle = { style: 'color:#0b1bc9' };
    const stringStyle = { style: 'color:#b62e24' };
    const keywordStyle = { style: 'color:#9d288c' };
    // custom formatter for Chrome
    // https://www.mattzeunert.com/2016/02/19/custom-chrome-devtools-object-formatters.html
    const formatter = {
      header(obj) {
        // TODO also format ComponentPublicInstance & ctx.slots/attrs in setup
        if (!isObject(obj)) {
          return null;
        }
        if (obj.__isVue) {
          return ['div', vueStyle, `VueInstance`];
        }
        else if (isRef(obj)) {
          return [
            'div',
            {},
            ['span', vueStyle, genRefFlag(obj)],
            '<',
            formatValue(obj.value),
            `>`
          ];
        }
        else if (isReactive(obj)) {
          return [
            'div',
            {},
            ['span', vueStyle, 'Reactive'],
            '<',
            formatValue(obj),
            `>${isReadonly(obj) ? ` (readonly)` : ``}`
          ];
        }
        else if (isReadonly(obj)) {
          return [
            'div',
            {},
            ['span', vueStyle, 'Readonly'],
            '<',
            formatValue(obj),
            '>'
          ];
        }
        return null;
      },
      hasBody(obj) {
        return obj && obj.__isVue;
      },
      body(obj) {
        if (obj && obj.__isVue) {
          return [
            'div',
            {},
            ...formatInstance(obj.$)
          ];
        }
      }
    };
    function formatInstance(instance) {
      const blocks = [];
      if (instance.type.props && instance.props) {
        blocks.push(createInstanceBlock('props', toRaw(instance.props)));
      }
      if (instance.setupState !== EMPTY_OBJ) {
        blocks.push(createInstanceBlock('setup', instance.setupState));
      }
      if (instance.data !== EMPTY_OBJ) {
        blocks.push(createInstanceBlock('data', toRaw(instance.data)));
      }
      const computed = extractKeys(instance, 'computed');
      if (computed) {
        blocks.push(createInstanceBlock('computed', computed));
      }
      const injected = extractKeys(instance, 'inject');
      if (injected) {
        blocks.push(createInstanceBlock('injected', injected));
      }
      blocks.push([
        'div',
        {},
        [
          'span',
          {
            style: keywordStyle.style + ';opacity:0.66'
          },
          '$ (internal): '
        ],
        ['object', { object: instance }]
      ]);
      return blocks;
    }
    function createInstanceBlock(type, target) {
      target = extend({}, target);
      if (!Object.keys(target).length) {
        return ['span', {}];
      }
      return [
        'div',
        { style: 'line-height:1.25em;margin-bottom:0.6em' },
        [
          'div',
          {
            style: 'color:#476582'
          },
          type
        ],
        [
          'div',
          {
            style: 'padding-left:1.25em'
          },
          ...Object.keys(target).map(key => {
            return [
              'div',
              {},
              ['span', keywordStyle, key + ': '],
              formatValue(target[key], false)
            ];
          })
        ]
      ];
    }
    function formatValue(v, asRaw = true) {
      if (typeof v === 'number') {
        return ['span', numberStyle, v];
      }
      else if (typeof v === 'string') {
        return ['span', stringStyle, JSON.stringify(v)];
      }
      else if (typeof v === 'boolean') {
        return ['span', keywordStyle, v];
      }
      else if (isObject(v)) {
        return ['object', { object: asRaw ? toRaw(v) : v }];
      }
      else {
        return ['span', stringStyle, String(v)];
      }
    }
    function extractKeys(instance, type) {
      const Comp = instance.type;
      if (isFunction(Comp)) {
        return;
      }
      const extracted = {};
      for (const key in instance.ctx) {
        if (isKeyOfType(Comp, key, type)) {
          extracted[key] = instance.ctx[key];
        }
      }
      return extracted;
    }
    function isKeyOfType(Comp, key, type) {
      const opts = Comp[type];
      if ((isArray(opts) && opts.includes(key)) ||
        (isObject(opts) && key in opts)) {
        return true;
      }
      if (Comp.extends && isKeyOfType(Comp.extends, key, type)) {
        return true;
      }
      if (Comp.mixins && Comp.mixins.some(m => isKeyOfType(m, key, type))) {
        return true;
      }
    }
    function genRefFlag(v) {
      if (v._shallow) {
        return `ShallowRef`;
      }
      if (v.effect) {
        return `ComputedRef`;
      }
      return `Ref`;
    }
    if (window.devtoolsFormatters) {
      window.devtoolsFormatters.push(formatter);
    }
    else {
      window.devtoolsFormatters = [formatter];
    }
  }

  /**
   * Actual implementation
   */
  function renderList(source, renderItem) {
    let ret;
    if (isArray(source) || isString(source)) {
      ret = new Array(source.length);
      for (let i = 0, l = source.length; i < l; i++) {
        ret[i] = renderItem(source[i], i);
      }
    }
    else if (typeof source === 'number') {
      if (!Number.isInteger(source)) {
        warn(`The v-for range expect an integer value but got ${source}.`);
        return [];
      }
      ret = new Array(source);
      for (let i = 0; i < source; i++) {
        ret[i] = renderItem(i + 1, i);
      }
    }
    else if (isObject(source)) {
      if (source[Symbol.iterator]) {
        ret = Array.from(source, renderItem);
      }
      else {
        const keys = Object.keys(source);
        ret = new Array(keys.length);
        for (let i = 0, l = keys.length; i < l; i++) {
          const key = keys[i];
          ret[i] = renderItem(source[key], key, i);
        }
      }
    }
    else {
      ret = [];
    }
    return ret;
  }

  /**
   * For prefixing keys in v-on="obj" with "on"
   * @private
   */
  function toHandlers(obj) {
    const ret = {};
    if (!isObject(obj)) {
      warn(`v-on with no argument expects an object value.`);
      return ret;
    }
    for (const key in obj) {
      ret[toHandlerKey(key)] = obj[key];
    }
    return ret;
  }

  /**
   * Compiler runtime helper for creating dynamic slots object
   * @private
   */
  function createSlots(slots, dynamicSlots) {
    for (let i = 0; i < dynamicSlots.length; i++) {
      const slot = dynamicSlots[i];
      // array of dynamic slot generated by <template v-for="..." #[...]>
      if (isArray(slot)) {
        for (let j = 0; j < slot.length; j++) {
          slots[slot[j].name] = slot[j].fn;
        }
      }
      else if (slot) {
        // conditional single slot generated by <template v-if="..." #foo>
        slots[slot.name] = slot.fn;
      }
    }
    return slots;
  }

  // Core API ------------------------------------------------------------------
  const version = "3.0.11";
  /**
   * SSR utils for \@vue/server-renderer. Only exposed in cjs builds.
   * @internal
   */
  const ssrUtils = (null);

  const svgNS = 'http://www.w3.org/2000/svg';
  const doc = (typeof document !== 'undefined' ? document : null);
  let tempContainer;
  let tempSVGContainer;
  const nodeOps = {
    insert: (child, parent, anchor) => {
      parent.insertBefore(child, anchor || null);
    },
    remove: child => {
      const parent = child.parentNode;
      if (parent) {
        parent.removeChild(child);
      }
    },
    createElement: (tag, isSVG, is, props) => {
      const el = isSVG
        ? doc.createElementNS(svgNS, tag)
        : doc.createElement(tag, is ? { is } : undefined);
      if (tag === 'select' && props && props.multiple != null) {
        el.setAttribute('multiple', props.multiple);
      }
      return el;
    },
    createText: text => doc.createTextNode(text),
    createComment: text => doc.createComment(text),
    setText: (node, text) => {
      node.nodeValue = text;
    },
    setElementText: (el, text) => {
      el.textContent = text;
    },
    parentNode: node => node.parentNode,
    nextSibling: node => node.nextSibling,
    querySelector: selector => doc.querySelector(selector),
    setScopeId(el, id) {
      el.setAttribute(id, '');
    },
    cloneNode(el) {
      const cloned = el.cloneNode(true);
      // #3072
      // - in `patchDOMProp`, we store the actual value in the `el._value` property.
      // - normally, elements using `:value` bindings will not be hoisted, but if
      //   the bound value is a constant, e.g. `:value="true"` - they do get
      //   hoisted.
      // - in production, hoisted nodes are cloned when subsequent inserts, but
      //   cloneNode() does not copy the custom property we attached.
      // - This may need to account for other custom DOM properties we attach to
      //   elements in addition to `_value` in the future.
      if (`_value` in el) {
        cloned._value = el._value;
      }
      return cloned;
    },
    // __UNSAFE__
    // Reason: innerHTML.
    // Static content here can only come from compiled templates.
    // As long as the user only uses trusted templates, this is safe.
    insertStaticContent(content, parent, anchor, isSVG) {
      const temp = isSVG
        ? tempSVGContainer ||
        (tempSVGContainer = doc.createElementNS(svgNS, 'svg'))
        : tempContainer || (tempContainer = doc.createElement('div'));
      temp.innerHTML = content;
      const first = temp.firstChild;
      let node = first;
      let last = node;
      while (node) {
        last = node;
        nodeOps.insert(node, parent, anchor);
        node = temp.firstChild;
      }
      return [first, last];
    }
  };

  // compiler should normalize class + :class bindings on the same element
  // into a single binding ['staticClass', dynamic]
  function patchClass(el, value, isSVG) {
    if (value == null) {
      value = '';
    }
    if (isSVG) {
      el.setAttribute('class', value);
    }
    else {
      // directly setting className should be faster than setAttribute in theory
      // if this is an element during a transition, take the temporary transition
      // classes into account.
      const transitionClasses = el._vtc;
      if (transitionClasses) {
        value = (value
          ? [value, ...transitionClasses]
          : [...transitionClasses]).join(' ');
      }
      el.className = value;
    }
  }

  function patchStyle(el, prev, next) {
    const style = el.style;
    if (!next) {
      el.removeAttribute('style');
    }
    else if (isString(next)) {
      if (prev !== next) {
        const current = style.display;
        style.cssText = next;
        // indicates that the `display` of the element is controlled by `v-show`,
        // so we always keep the current `display` value regardless of the `style` value,
        // thus handing over control to `v-show`.
        if ('_vod' in el) {
          style.display = current;
        }
      }
    }
    else {
      for (const key in next) {
        setStyle(style, key, next[key]);
      }
      if (prev && !isString(prev)) {
        for (const key in prev) {
          if (next[key] == null) {
            setStyle(style, key, '');
          }
        }
      }
    }
  }
  const importantRE = /\s*!important$/;
  function setStyle(style, name, val) {
    if (isArray(val)) {
      val.forEach(v => setStyle(style, name, v));
    }
    else {
      if (name.startsWith('--')) {
        // custom property definition
        style.setProperty(name, val);
      }
      else {
        const prefixed = autoPrefix(style, name);
        if (importantRE.test(val)) {
          // !important
          style.setProperty(hyphenate(prefixed), val.replace(importantRE, ''), 'important');
        }
        else {
          style[prefixed] = val;
        }
      }
    }
  }
  const prefixes = ['Webkit', 'Moz', 'ms'];
  const prefixCache = {};
  function autoPrefix(style, rawName) {
    const cached = prefixCache[rawName];
    if (cached) {
      return cached;
    }
    let name = camelize(rawName);
    if (name !== 'filter' && name in style) {
      return (prefixCache[rawName] = name);
    }
    name = capitalize(name);
    for (let i = 0; i < prefixes.length; i++) {
      const prefixed = prefixes[i] + name;
      if (prefixed in style) {
        return (prefixCache[rawName] = prefixed);
      }
    }
    return rawName;
  }

  const xlinkNS = 'http://www.w3.org/1999/xlink';
  function patchAttr(el, key, value, isSVG) {
    if (isSVG && key.startsWith('xlink:')) {
      if (value == null) {
        el.removeAttributeNS(xlinkNS, key.slice(6, key.length));
      }
      else {
        el.setAttributeNS(xlinkNS, key, value);
      }
    }
    else {
      // note we are only checking boolean attributes that don't have a
      // corresponding dom prop of the same name here.
      const isBoolean = isSpecialBooleanAttr(key);
      if (value == null || (isBoolean && value === false)) {
        el.removeAttribute(key);
      }
      else {
        el.setAttribute(key, isBoolean ? '' : value);
      }
    }
  }

  // __UNSAFE__
  // functions. The user is responsible for using them with only trusted content.
  function patchDOMProp(el, key, value,
                        // the following args are passed only due to potential innerHTML/textContent
                        // overriding existing VNodes, in which case the old tree must be properly
                        // unmounted.
                        prevChildren, parentComponent, parentSuspense, unmountChildren) {
    if (key === 'innerHTML' || key === 'textContent') {
      if (prevChildren) {
        unmountChildren(prevChildren, parentComponent, parentSuspense);
      }
      el[key] = value == null ? '' : value;
      return;
    }
    if (key === 'value' && el.tagName !== 'PROGRESS') {
      // store value as _value as well since
      // non-string values will be stringified.
      el._value = value;
      const newValue = value == null ? '' : value;
      if (el.value !== newValue) {
        el.value = newValue;
      }
      return;
    }
    if (value === '' || value == null) {
      const type = typeof el[key];
      if (value === '' && type === 'boolean') {
        // e.g. <select multiple> compiles to { multiple: '' }
        el[key] = true;
        return;
      }
      else if (value == null && type === 'string') {
        // e.g. <div :id="null">
        el[key] = '';
        el.removeAttribute(key);
        return;
      }
      else if (type === 'number') {
        // e.g. <img :width="null">
        el[key] = 0;
        el.removeAttribute(key);
        return;
      }
    }
    // some properties perform value validation and throw
    try {
      el[key] = value;
    }
    catch (e) {
      {
        warn(`Failed setting prop "${key}" on <${el.tagName.toLowerCase()}>: ` +
          `value ${value} is invalid.`, e);
      }
    }
  }

  // Async edge case fix requires storing an event listener's attach timestamp.
  let _getNow = Date.now;
  let skipTimestampCheck = false;
  if (typeof window !== 'undefined') {
    // Determine what event timestamp the browser is using. Annoyingly, the
    // timestamp can either be hi-res (relative to page load) or low-res
    // (relative to UNIX epoch), so in order to compare time we have to use the
    // same timestamp type when saving the flush timestamp.
    if (_getNow() > document.createEvent('Event').timeStamp) {
      // if the low-res timestamp which is bigger than the event timestamp
      // (which is evaluated AFTER) it means the event is using a hi-res timestamp,
      // and we need to use the hi-res version for event listeners as well.
      _getNow = () => performance.now();
    }
    // #3485: Firefox <= 53 has incorrect Event.timeStamp implementation
    // and does not fire microtasks in between event propagation, so safe to exclude.
    const ffMatch = navigator.userAgent.match(/firefox\/(\d+)/i);
    skipTimestampCheck = !!(ffMatch && Number(ffMatch[1]) <= 53);
  }
  // To avoid the overhead of repeatedly calling performance.now(), we cache
  // and use the same timestamp for all event listeners attached in the same tick.
  let cachedNow = 0;
  const p = Promise.resolve();
  const reset = () => {
    cachedNow = 0;
  };
  const getNow = () => cachedNow || (p.then(reset), (cachedNow = _getNow()));
  function addEventListener(el, event, handler, options) {
    el.addEventListener(event, handler, options);
  }
  function removeEventListener(el, event, handler, options) {
    el.removeEventListener(event, handler, options);
  }
  function patchEvent(el, rawName, prevValue, nextValue, instance = null) {
    // vei = vue event invokers
    const invokers = el._vei || (el._vei = {});
    const existingInvoker = invokers[rawName];
    if (nextValue && existingInvoker) {
      // patch
      existingInvoker.value = nextValue;
    }
    else {
      const [name, options] = parseName(rawName);
      if (nextValue) {
        // add
        const invoker = (invokers[rawName] = createInvoker(nextValue, instance));
        addEventListener(el, name, invoker, options);
      }
      else if (existingInvoker) {
        // remove
        removeEventListener(el, name, existingInvoker, options);
        invokers[rawName] = undefined;
      }
    }
  }
  const optionsModifierRE = /(?:Once|Passive|Capture)$/;
  function parseName(name) {
    let options;
    if (optionsModifierRE.test(name)) {
      options = {};
      let m;
      while ((m = name.match(optionsModifierRE))) {
        name = name.slice(0, name.length - m[0].length);
        options[m[0].toLowerCase()] = true;
      }
    }
    return [hyphenate(name.slice(2)), options];
  }
  function createInvoker(initialValue, instance) {
    const invoker = (e) => {
      // async edge case #6566: inner click event triggers patch, event handler
      // attached to outer element during patch, and triggered again. This
      // happens because browsers fire microtask ticks between event propagation.
      // the solution is simple: we save the timestamp when a handler is attached,
      // and the handler would only fire if the event passed to it was fired
      // AFTER it was attached.
      const timeStamp = e.timeStamp || _getNow();
      if (skipTimestampCheck || timeStamp >= invoker.attached - 1) {
        callWithAsyncErrorHandling(patchStopImmediatePropagation(e, invoker.value), instance, 5 /* NATIVE_EVENT_HANDLER */, [e]);
      }
    };
    invoker.value = initialValue;
    invoker.attached = getNow();
    return invoker;
  }
  function patchStopImmediatePropagation(e, value) {
    if (isArray(value)) {
      const originalStop = e.stopImmediatePropagation;
      e.stopImmediatePropagation = () => {
        originalStop.call(e);
        e._stopped = true;
      };
      return value.map(fn => (e) => !e._stopped && fn(e));
    }
    else {
      return value;
    }
  }

  const nativeOnRE = /^on[a-z]/;
  const forcePatchProp = (_, key) => key === 'value';
  const patchProp = (el, key, prevValue, nextValue, isSVG = false, prevChildren, parentComponent, parentSuspense, unmountChildren) => {
    switch (key) {
      // special
      case 'class':
        patchClass(el, nextValue, isSVG);
        break;
      case 'style':
        patchStyle(el, prevValue, nextValue);
        break;
      default:
        if (isOn(key)) {
          // ignore v-model listeners
          if (!isModelListener(key)) {
            patchEvent(el, key, prevValue, nextValue, parentComponent);
          }
        }
        else if (shouldSetAsProp(el, key, nextValue, isSVG)) {
          patchDOMProp(el, key, nextValue, prevChildren, parentComponent, parentSuspense, unmountChildren);
        }
        else {
          // special case for <input v-model type="checkbox"> with
          // :true-value & :false-value
          // store value as dom properties since non-string values will be
          // stringified.
          if (key === 'true-value') {
            el._trueValue = nextValue;
          }
          else if (key === 'false-value') {
            el._falseValue = nextValue;
          }
          patchAttr(el, key, nextValue, isSVG);
        }
        break;
    }
  };
  function shouldSetAsProp(el, key, value, isSVG) {
    if (isSVG) {
      // most keys must be set as attribute on svg elements to work
      // ...except innerHTML
      if (key === 'innerHTML') {
        return true;
      }
      // or native onclick with function values
      if (key in el && nativeOnRE.test(key) && isFunction(value)) {
        return true;
      }
      return false;
    }
    // spellcheck and draggable are numerated attrs, however their
    // corresponding DOM properties are actually booleans - this leads to
    // setting it with a string "false" value leading it to be coerced to
    // `true`, so we need to always treat them as attributes.
    // Note that `contentEditable` doesn't have this problem: its DOM
    // property is also enumerated string values.
    if (key === 'spellcheck' || key === 'draggable') {
      return false;
    }
    // #1787, #2840 form property on form elements is readonly and must be set as
    // attribute.
    if (key === 'form') {
      return false;
    }
    // #1526 <input list> must be set as attribute
    if (key === 'list' && el.tagName === 'INPUT') {
      return false;
    }
    // #2766 <textarea type> must be set as attribute
    if (key === 'type' && el.tagName === 'TEXTAREA') {
      return false;
    }
    // native onclick with string value, must be set as attribute
    if (nativeOnRE.test(key) && isString(value)) {
      return false;
    }
    return key in el;
  }

  function useCssModule(name = '$style') {
    /* istanbul ignore else */
    {
      {
        warn(`useCssModule() is not supported in the global build.`);
      }
      return EMPTY_OBJ;
    }
  }

  /**
   * Runtime helper for SFC's CSS variable injection feature.
   * @private
   */
  function useCssVars(getter) {
    const instance = getCurrentInstance();
    /* istanbul ignore next */
    if (!instance) {
      warn(`useCssVars is called without current active component instance.`);
      return;
    }
    const setVars = () => setVarsOnVNode(instance.subTree, getter(instance.proxy));
    onMounted(() => watchEffect(setVars, { flush: 'post' }));
    onUpdated(setVars);
  }
  function setVarsOnVNode(vnode, vars) {
    if (vnode.shapeFlag & 128 /* SUSPENSE */) {
      const suspense = vnode.suspense;
      vnode = suspense.activeBranch;
      if (suspense.pendingBranch && !suspense.isHydrating) {
        suspense.effects.push(() => {
          setVarsOnVNode(suspense.activeBranch, vars);
        });
      }
    }
    // drill down HOCs until it's a non-component vnode
    while (vnode.component) {
      vnode = vnode.component.subTree;
    }
    if (vnode.shapeFlag & 1 /* ELEMENT */ && vnode.el) {
      const style = vnode.el.style;
      for (const key in vars) {
        style.setProperty(`--${key}`, vars[key]);
      }
    }
    else if (vnode.type === Fragment) {
      vnode.children.forEach(c => setVarsOnVNode(c, vars));
    }
  }

  const TRANSITION = 'transition';
  const ANIMATION = 'animation';
  // DOM Transition is a higher-order-component based on the platform-agnostic
  // base Transition component, with DOM-specific logic.
  const Transition = (props, { slots }) => h(BaseTransition, resolveTransitionProps(props), slots);
  Transition.displayName = 'Transition';
  const DOMTransitionPropsValidators = {
    name: String,
    type: String,
    css: {
      type: Boolean,
      default: true
    },
    duration: [String, Number, Object],
    enterFromClass: String,
    enterActiveClass: String,
    enterToClass: String,
    appearFromClass: String,
    appearActiveClass: String,
    appearToClass: String,
    leaveFromClass: String,
    leaveActiveClass: String,
    leaveToClass: String
  };
  const TransitionPropsValidators = (Transition.props = /*#__PURE__*/ extend({}, BaseTransition.props, DOMTransitionPropsValidators));
  function resolveTransitionProps(rawProps) {
    let { name = 'v', type, css = true, duration, enterFromClass = `${name}-enter-from`, enterActiveClass = `${name}-enter-active`, enterToClass = `${name}-enter-to`, appearFromClass = enterFromClass, appearActiveClass = enterActiveClass, appearToClass = enterToClass, leaveFromClass = `${name}-leave-from`, leaveActiveClass = `${name}-leave-active`, leaveToClass = `${name}-leave-to` } = rawProps;
    const baseProps = {};
    for (const key in rawProps) {
      if (!(key in DOMTransitionPropsValidators)) {
        baseProps[key] = rawProps[key];
      }
    }
    if (!css) {
      return baseProps;
    }
    const durations = normalizeDuration(duration);
    const enterDuration = durations && durations[0];
    const leaveDuration = durations && durations[1];
    const { onBeforeEnter, onEnter, onEnterCancelled, onLeave, onLeaveCancelled, onBeforeAppear = onBeforeEnter, onAppear = onEnter, onAppearCancelled = onEnterCancelled } = baseProps;
    const finishEnter = (el, isAppear, done) => {
      removeTransitionClass(el, isAppear ? appearToClass : enterToClass);
      removeTransitionClass(el, isAppear ? appearActiveClass : enterActiveClass);
      done && done();
    };
    const finishLeave = (el, done) => {
      removeTransitionClass(el, leaveToClass);
      removeTransitionClass(el, leaveActiveClass);
      done && done();
    };
    const makeEnterHook = (isAppear) => {
      return (el, done) => {
        const hook = isAppear ? onAppear : onEnter;
        const resolve = () => finishEnter(el, isAppear, done);
        hook && hook(el, resolve);
        nextFrame(() => {
          removeTransitionClass(el, isAppear ? appearFromClass : enterFromClass);
          addTransitionClass(el, isAppear ? appearToClass : enterToClass);
          if (!(hook && hook.length > 1)) {
            whenTransitionEnds(el, type, enterDuration, resolve);
          }
        });
      };
    };
    return extend(baseProps, {
      onBeforeEnter(el) {
        onBeforeEnter && onBeforeEnter(el);
        addTransitionClass(el, enterFromClass);
        addTransitionClass(el, enterActiveClass);
      },
      onBeforeAppear(el) {
        onBeforeAppear && onBeforeAppear(el);
        addTransitionClass(el, appearFromClass);
        addTransitionClass(el, appearActiveClass);
      },
      onEnter: makeEnterHook(false),
      onAppear: makeEnterHook(true),
      onLeave(el, done) {
        const resolve = () => finishLeave(el, done);
        addTransitionClass(el, leaveFromClass);
        // force reflow so *-leave-from classes immediately take effect (#2593)
        forceReflow();
        addTransitionClass(el, leaveActiveClass);
        nextFrame(() => {
          removeTransitionClass(el, leaveFromClass);
          addTransitionClass(el, leaveToClass);
          if (!(onLeave && onLeave.length > 1)) {
            whenTransitionEnds(el, type, leaveDuration, resolve);
          }
        });
        onLeave && onLeave(el, resolve);
      },
      onEnterCancelled(el) {
        finishEnter(el, false);
        onEnterCancelled && onEnterCancelled(el);
      },
      onAppearCancelled(el) {
        finishEnter(el, true);
        onAppearCancelled && onAppearCancelled(el);
      },
      onLeaveCancelled(el) {
        finishLeave(el);
        onLeaveCancelled && onLeaveCancelled(el);
      }
    });
  }
  function normalizeDuration(duration) {
    if (duration == null) {
      return null;
    }
    else if (isObject(duration)) {
      return [NumberOf(duration.enter), NumberOf(duration.leave)];
    }
    else {
      const n = NumberOf(duration);
      return [n, n];
    }
  }
  function NumberOf(val) {
    const res = toNumber(val);
    validateDuration(res);
    return res;
  }
  function validateDuration(val) {
    if (typeof val !== 'number') {
      warn(`<transition> explicit duration is not a valid number - ` +
        `got ${JSON.stringify(val)}.`);
    }
    else if (isNaN(val)) {
      warn(`<transition> explicit duration is NaN - ` +
        'the duration expression might be incorrect.');
    }
  }
  function addTransitionClass(el, cls) {
    cls.split(/\s+/).forEach(c => c && el.classList.add(c));
    (el._vtc ||
      (el._vtc = new Set())).add(cls);
  }
  function removeTransitionClass(el, cls) {
    cls.split(/\s+/).forEach(c => c && el.classList.remove(c));
    const { _vtc } = el;
    if (_vtc) {
      _vtc.delete(cls);
      if (!_vtc.size) {
        el._vtc = undefined;
      }
    }
  }
  function nextFrame(cb) {
    requestAnimationFrame(() => {
      requestAnimationFrame(cb);
    });
  }
  let endId = 0;
  function whenTransitionEnds(el, expectedType, explicitTimeout, resolve) {
    const id = (el._endId = ++endId);
    const resolveIfNotStale = () => {
      if (id === el._endId) {
        resolve();
      }
    };
    if (explicitTimeout) {
      return setTimeout(resolveIfNotStale, explicitTimeout);
    }
    const { type, timeout, propCount } = getTransitionInfo(el, expectedType);
    if (!type) {
      return resolve();
    }
    const endEvent = type + 'end';
    let ended = 0;
    const end = () => {
      el.removeEventListener(endEvent, onEnd);
      resolveIfNotStale();
    };
    const onEnd = (e) => {
      if (e.target === el && ++ended >= propCount) {
        end();
      }
    };
    setTimeout(() => {
      if (ended < propCount) {
        end();
      }
    }, timeout + 1);
    el.addEventListener(endEvent, onEnd);
  }
  function getTransitionInfo(el, expectedType) {
    const styles = window.getComputedStyle(el);
    // JSDOM may return undefined for transition properties
    const getStyleProperties = (key) => (styles[key] || '').split(', ');
    const transitionDelays = getStyleProperties(TRANSITION + 'Delay');
    const transitionDurations = getStyleProperties(TRANSITION + 'Duration');
    const transitionTimeout = getTimeout(transitionDelays, transitionDurations);
    const animationDelays = getStyleProperties(ANIMATION + 'Delay');
    const animationDurations = getStyleProperties(ANIMATION + 'Duration');
    const animationTimeout = getTimeout(animationDelays, animationDurations);
    let type = null;
    let timeout = 0;
    let propCount = 0;
    /* istanbul ignore if */
    if (expectedType === TRANSITION) {
      if (transitionTimeout > 0) {
        type = TRANSITION;
        timeout = transitionTimeout;
        propCount = transitionDurations.length;
      }
    }
    else if (expectedType === ANIMATION) {
      if (animationTimeout > 0) {
        type = ANIMATION;
        timeout = animationTimeout;
        propCount = animationDurations.length;
      }
    }
    else {
      timeout = Math.max(transitionTimeout, animationTimeout);
      type =
        timeout > 0
          ? transitionTimeout > animationTimeout
          ? TRANSITION
          : ANIMATION
          : null;
      propCount = type
        ? type === TRANSITION
          ? transitionDurations.length
          : animationDurations.length
        : 0;
    }
    const hasTransform = type === TRANSITION &&
      /\b(transform|all)(,|$)/.test(styles[TRANSITION + 'Property']);
    return {
      type,
      timeout,
      propCount,
      hasTransform
    };
  }
  function getTimeout(delays, durations) {
    while (delays.length < durations.length) {
      delays = delays.concat(delays);
    }
    return Math.max(...durations.map((d, i) => toMs(d) + toMs(delays[i])));
  }
  // Old versions of Chromium (below 61.0.3163.100) formats floating pointer
  // numbers in a locale-dependent way, using a comma instead of a dot.
  // If comma is not replaced with a dot, the input will be rounded down
  // (i.e. acting as a floor function) causing unexpected behaviors
  function toMs(s) {
    return Number(s.slice(0, -1).replace(',', '.')) * 1000;
  }
  // synchronously force layout to put elements into a certain state
  function forceReflow() {
    return document.body.offsetHeight;
  }

  const positionMap = new WeakMap();
  const newPositionMap = new WeakMap();
  const TransitionGroupImpl = {
    name: 'TransitionGroup',
    props: /*#__PURE__*/ extend({}, TransitionPropsValidators, {
      tag: String,
      moveClass: String
    }),
    setup(props, { slots }) {
      const instance = getCurrentInstance();
      const state = useTransitionState();
      let prevChildren;
      let children;
      onUpdated(() => {
        // children is guaranteed to exist after initial render
        if (!prevChildren.length) {
          return;
        }
        const moveClass = props.moveClass || `${props.name || 'v'}-move`;
        if (!hasCSSTransform(prevChildren[0].el, instance.vnode.el, moveClass)) {
          return;
        }
        // we divide the work into three loops to avoid mixing DOM reads and writes
        // in each iteration - which helps prevent layout thrashing.
        prevChildren.forEach(callPendingCbs);
        prevChildren.forEach(recordPosition);
        const movedChildren = prevChildren.filter(applyTranslation);
        // force reflow to put everything in position
        forceReflow();
        movedChildren.forEach(c => {
          const el = c.el;
          const style = el.style;
          addTransitionClass(el, moveClass);
          style.transform = style.webkitTransform = style.transitionDuration = '';
          const cb = (el._moveCb = (e) => {
            if (e && e.target !== el) {
              return;
            }
            if (!e || /transform$/.test(e.propertyName)) {
              el.removeEventListener('transitionend', cb);
              el._moveCb = null;
              removeTransitionClass(el, moveClass);
            }
          });
          el.addEventListener('transitionend', cb);
        });
      });
      return () => {
        const rawProps = toRaw(props);
        const cssTransitionProps = resolveTransitionProps(rawProps);
        const tag = rawProps.tag || Fragment;
        prevChildren = children;
        children = slots.default ? getTransitionRawChildren(slots.default()) : [];
        for (let i = 0; i < children.length; i++) {
          const child = children[i];
          if (child.key != null) {
            setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
          }
          else {
            warn(`<TransitionGroup> children must be keyed.`);
          }
        }
        if (prevChildren) {
          for (let i = 0; i < prevChildren.length; i++) {
            const child = prevChildren[i];
            setTransitionHooks(child, resolveTransitionHooks(child, cssTransitionProps, state, instance));
            positionMap.set(child, child.el.getBoundingClientRect());
          }
        }
        return createVNode(tag, null, children);
      };
    }
  };
  const TransitionGroup = TransitionGroupImpl;
  function callPendingCbs(c) {
    const el = c.el;
    if (el._moveCb) {
      el._moveCb();
    }
    if (el._enterCb) {
      el._enterCb();
    }
  }
  function recordPosition(c) {
    newPositionMap.set(c, c.el.getBoundingClientRect());
  }
  function applyTranslation(c) {
    const oldPos = positionMap.get(c);
    const newPos = newPositionMap.get(c);
    const dx = oldPos.left - newPos.left;
    const dy = oldPos.top - newPos.top;
    if (dx || dy) {
      const s = c.el.style;
      s.transform = s.webkitTransform = `translate(${dx}px,${dy}px)`;
      s.transitionDuration = '0s';
      return c;
    }
  }
  function hasCSSTransform(el, root, moveClass) {
    // Detect whether an element with the move class applied has
    // CSS transitions. Since the element may be inside an entering
    // transition at this very moment, we make a clone of it and remove
    // all other transition classes applied to ensure only the move class
    // is applied.
    const clone = el.cloneNode();
    if (el._vtc) {
      el._vtc.forEach(cls => {
        cls.split(/\s+/).forEach(c => c && clone.classList.remove(c));
      });
    }
    moveClass.split(/\s+/).forEach(c => c && clone.classList.add(c));
    clone.style.display = 'none';
    const container = (root.nodeType === 1
      ? root
      : root.parentNode);
    container.appendChild(clone);
    const { hasTransform } = getTransitionInfo(clone);
    container.removeChild(clone);
    return hasTransform;
  }

  const getModelAssigner = (vnode) => {
    const fn = vnode.props['onUpdate:modelValue'];
    return isArray(fn) ? value => invokeArrayFns(fn, value) : fn;
  };
  function onCompositionStart(e) {
    e.target.composing = true;
  }
  function onCompositionEnd(e) {
    const target = e.target;
    if (target.composing) {
      target.composing = false;
      trigger$1(target, 'input');
    }
  }
  function trigger$1(el, type) {
    const e = document.createEvent('HTMLEvents');
    e.initEvent(type, true, true);
    el.dispatchEvent(e);
  }
  // We are exporting the v-model runtime directly as vnode hooks so that it can
  // be tree-shaken in case v-model is never used.
  const vModelText = {
    created(el, { modifiers: { lazy, trim, number } }, vnode) {
      el._assign = getModelAssigner(vnode);
      const castToNumber = number || el.type === 'number';
      addEventListener(el, lazy ? 'change' : 'input', e => {
        if (e.target.composing)
          return;
        let domValue = el.value;
        if (trim) {
          domValue = domValue.trim();
        }
        else if (castToNumber) {
          domValue = toNumber(domValue);
        }
        el._assign(domValue);
      });
      if (trim) {
        addEventListener(el, 'change', () => {
          el.value = el.value.trim();
        });
      }
      if (!lazy) {
        addEventListener(el, 'compositionstart', onCompositionStart);
        addEventListener(el, 'compositionend', onCompositionEnd);
        // Safari < 10.2 & UIWebView doesn't fire compositionend when
        // switching focus before confirming composition choice
        // this also fixes the issue where some browsers e.g. iOS Chrome
        // fires "change" instead of "input" on autocomplete.
        addEventListener(el, 'change', onCompositionEnd);
      }
    },
    // set value on mounted so it's after min/max for type="range"
    mounted(el, { value }) {
      el.value = value == null ? '' : value;
    },
    beforeUpdate(el, { value, modifiers: { trim, number } }, vnode) {
      el._assign = getModelAssigner(vnode);
      // avoid clearing unresolved text. #2302
      if (el.composing)
        return;
      if (document.activeElement === el) {
        if (trim && el.value.trim() === value) {
          return;
        }
        if ((number || el.type === 'number') && toNumber(el.value) === value) {
          return;
        }
      }
      const newValue = value == null ? '' : value;
      if (el.value !== newValue) {
        el.value = newValue;
      }
    }
  };
  const vModelCheckbox = {
    created(el, _, vnode) {
      el._assign = getModelAssigner(vnode);
      addEventListener(el, 'change', () => {
        const modelValue = el._modelValue;
        const elementValue = getValue(el);
        const checked = el.checked;
        const assign = el._assign;
        if (isArray(modelValue)) {
          const index = looseIndexOf(modelValue, elementValue);
          const found = index !== -1;
          if (checked && !found) {
            assign(modelValue.concat(elementValue));
          }
          else if (!checked && found) {
            const filtered = [...modelValue];
            filtered.splice(index, 1);
            assign(filtered);
          }
        }
        else if (isSet(modelValue)) {
          const cloned = new Set(modelValue);
          if (checked) {
            cloned.add(elementValue);
          }
          else {
            cloned.delete(elementValue);
          }
          assign(cloned);
        }
        else {
          assign(getCheckboxValue(el, checked));
        }
      });
    },
    // set initial checked on mount to wait for true-value/false-value
    mounted: setChecked,
    beforeUpdate(el, binding, vnode) {
      el._assign = getModelAssigner(vnode);
      setChecked(el, binding, vnode);
    }
  };
  function setChecked(el, { value, oldValue }, vnode) {
    el._modelValue = value;
    if (isArray(value)) {
      el.checked = looseIndexOf(value, vnode.props.value) > -1;
    }
    else if (isSet(value)) {
      el.checked = value.has(vnode.props.value);
    }
    else if (value !== oldValue) {
      el.checked = looseEqual(value, getCheckboxValue(el, true));
    }
  }
  const vModelRadio = {
    created(el, { value }, vnode) {
      el.checked = looseEqual(value, vnode.props.value);
      el._assign = getModelAssigner(vnode);
      addEventListener(el, 'change', () => {
        el._assign(getValue(el));
      });
    },
    beforeUpdate(el, { value, oldValue }, vnode) {
      el._assign = getModelAssigner(vnode);
      if (value !== oldValue) {
        el.checked = looseEqual(value, vnode.props.value);
      }
    }
  };
  const vModelSelect = {
    created(el, { value, modifiers: { number } }, vnode) {
      const isSetModel = isSet(value);
      addEventListener(el, 'change', () => {
        const selectedVal = Array.prototype.filter
          .call(el.options, (o) => o.selected)
          .map((o) => number ? toNumber(getValue(o)) : getValue(o));
        el._assign(el.multiple
          ? isSetModel
            ? new Set(selectedVal)
            : selectedVal
          : selectedVal[0]);
      });
      el._assign = getModelAssigner(vnode);
    },
    // set value in mounted & updated because <select> relies on its children
    // <option>s.
    mounted(el, { value }) {
      setSelected(el, value);
    },
    beforeUpdate(el, _binding, vnode) {
      el._assign = getModelAssigner(vnode);
    },
    updated(el, { value }) {
      setSelected(el, value);
    }
  };
  function setSelected(el, value) {
    const isMultiple = el.multiple;
    if (isMultiple && !isArray(value) && !isSet(value)) {
      warn(`<select multiple v-model> expects an Array or Set value for its binding, ` +
        `but got ${Object.prototype.toString.call(value).slice(8, -1)}.`);
      return;
    }
    for (let i = 0, l = el.options.length; i < l; i++) {
      const option = el.options[i];
      const optionValue = getValue(option);
      if (isMultiple) {
        if (isArray(value)) {
          option.selected = looseIndexOf(value, optionValue) > -1;
        }
        else {
          option.selected = value.has(optionValue);
        }
      }
      else {
        if (looseEqual(getValue(option), value)) {
          el.selectedIndex = i;
          return;
        }
      }
    }
    if (!isMultiple) {
      el.selectedIndex = -1;
    }
  }
  // retrieve raw value set via :value bindings
  function getValue(el) {
    return '_value' in el ? el._value : el.value;
  }
  // retrieve raw value for true-value and false-value set via :true-value or :false-value bindings
  function getCheckboxValue(el, checked) {
    const key = checked ? '_trueValue' : '_falseValue';
    return key in el ? el[key] : checked;
  }
  const vModelDynamic = {
    created(el, binding, vnode) {
      callModelHook(el, binding, vnode, null, 'created');
    },
    mounted(el, binding, vnode) {
      callModelHook(el, binding, vnode, null, 'mounted');
    },
    beforeUpdate(el, binding, vnode, prevVNode) {
      callModelHook(el, binding, vnode, prevVNode, 'beforeUpdate');
    },
    updated(el, binding, vnode, prevVNode) {
      callModelHook(el, binding, vnode, prevVNode, 'updated');
    }
  };
  function callModelHook(el, binding, vnode, prevVNode, hook) {
    let modelToUse;
    switch (el.tagName) {
      case 'SELECT':
        modelToUse = vModelSelect;
        break;
      case 'TEXTAREA':
        modelToUse = vModelText;
        break;
      default:
        switch (vnode.props && vnode.props.type) {
          case 'checkbox':
            modelToUse = vModelCheckbox;
            break;
          case 'radio':
            modelToUse = vModelRadio;
            break;
          default:
            modelToUse = vModelText;
        }
    }
    const fn = modelToUse[hook];
    fn && fn(el, binding, vnode, prevVNode);
  }

  const systemModifiers = ['ctrl', 'shift', 'alt', 'meta'];
  const modifierGuards = {
    stop: e => e.stopPropagation(),
    prevent: e => e.preventDefault(),
    self: e => e.target !== e.currentTarget,
    ctrl: e => !e.ctrlKey,
    shift: e => !e.shiftKey,
    alt: e => !e.altKey,
    meta: e => !e.metaKey,
    left: e => 'button' in e && e.button !== 0,
    middle: e => 'button' in e && e.button !== 1,
    right: e => 'button' in e && e.button !== 2,
    exact: (e, modifiers) => systemModifiers.some(m => e[`${m}Key`] && !modifiers.includes(m))
  };
  /**
   * @private
   */
  const withModifiers = (fn, modifiers) => {
    return (event, ...args) => {
      for (let i = 0; i < modifiers.length; i++) {
        const guard = modifierGuards[modifiers[i]];
        if (guard && guard(event, modifiers))
          return;
      }
      return fn(event, ...args);
    };
  };
  // Kept for 2.x compat.
  // Note: IE11 compat for `spacebar` and `del` is removed for now.
  const keyNames = {
    esc: 'escape',
    space: ' ',
    up: 'arrow-up',
    left: 'arrow-left',
    right: 'arrow-right',
    down: 'arrow-down',
    delete: 'backspace'
  };
  /**
   * @private
   */
  const withKeys = (fn, modifiers) => {
    return (event) => {
      if (!('key' in event))
        return;
      const eventKey = hyphenate(event.key);
      if (
        // None of the provided key modifiers match the current event key
        !modifiers.some(k => k === eventKey || keyNames[k] === eventKey)) {
        return;
      }
      return fn(event);
    };
  };

  const vShow = {
    beforeMount(el, { value }, { transition }) {
      el._vod = el.style.display === 'none' ? '' : el.style.display;
      if (transition && value) {
        transition.beforeEnter(el);
      }
      else {
        setDisplay(el, value);
      }
    },
    mounted(el, { value }, { transition }) {
      if (transition && value) {
        transition.enter(el);
      }
    },
    updated(el, { value, oldValue }, { transition }) {
      if (!value === !oldValue)
        return;
      if (transition) {
        if (value) {
          transition.beforeEnter(el);
          setDisplay(el, true);
          transition.enter(el);
        }
        else {
          transition.leave(el, () => {
            setDisplay(el, false);
          });
        }
      }
      else {
        setDisplay(el, value);
      }
    },
    beforeUnmount(el, { value }) {
      setDisplay(el, value);
    }
  };
  function setDisplay(el, value) {
    el.style.display = value ? el._vod : 'none';
  }

  const rendererOptions = extend({ patchProp, forcePatchProp }, nodeOps);
  // lazy create the renderer - this makes core renderer logic tree-shakable
  // in case the user only imports reactivity utilities from Vue.
  let renderer;
  let enabledHydration = false;
  function ensureRenderer() {
    return renderer || (renderer = createRenderer(rendererOptions));
  }
  function ensureHydrationRenderer() {
    renderer = enabledHydration
      ? renderer
      : createHydrationRenderer(rendererOptions);
    enabledHydration = true;
    return renderer;
  }
  // use explicit type casts here to avoid import() calls in rolled-up d.ts
  const render = ((...args) => {
    ensureRenderer().render(...args);
  });
  const hydrate = ((...args) => {
    ensureHydrationRenderer().hydrate(...args);
  });
  const createApp = ((...args) => {
    const app = ensureRenderer().createApp(...args);
    {
      injectNativeTagCheck(app);
      injectCustomElementCheck(app);
    }
    const { mount } = app;
    app.mount = (containerOrSelector) => {
      const container = normalizeContainer(containerOrSelector);
      if (!container)
        return;
      const component = app._component;
      if (!isFunction(component) && !component.render && !component.template) {
        component.template = container.innerHTML;
      }
      // clear content before mounting
      container.innerHTML = '';
      const proxy = mount(container, false, container instanceof SVGElement);
      if (container instanceof Element) {
        container.removeAttribute('v-cloak');
        container.setAttribute('data-v-app', '');
      }
      return proxy;
    };
    return app;
  });
  const createSSRApp = ((...args) => {
    const app = ensureHydrationRenderer().createApp(...args);
    {
      injectNativeTagCheck(app);
      injectCustomElementCheck(app);
    }
    const { mount } = app;
    app.mount = (containerOrSelector) => {
      const container = normalizeContainer(containerOrSelector);
      if (container) {
        return mount(container, true, container instanceof SVGElement);
      }
    };
    return app;
  });
  function injectNativeTagCheck(app) {
    // Inject `isNativeTag`
    // this is used for component name validation (dev only)
    Object.defineProperty(app.config, 'isNativeTag', {
      value: (tag) => isHTMLTag(tag) || isSVGTag(tag),
      writable: false
    });
  }
  // dev only
  function injectCustomElementCheck(app) {
    if (isRuntimeOnly()) {
      const value = app.config.isCustomElement;
      Object.defineProperty(app.config, 'isCustomElement', {
        get() {
          return value;
        },
        set() {
          warn(`The \`isCustomElement\` config option is only respected when using the runtime compiler.` +
            `If you are using the runtime-only build, \`isCustomElement\` must be passed to \`@vue/compiler-dom\` in the build setup instead` +
            `- for example, via the \`compilerOptions\` option in vue-loader: https://vue-loader.vuejs.org/options.html#compileroptions.`);
        }
      });
    }
  }
  function normalizeContainer(container) {
    if (isString(container)) {
      const res = document.querySelector(container);
      if (!res) {
        warn(`Failed to mount app: mount target selector "${container}" returned null.`);
      }
      return res;
    }
    if (container instanceof window.ShadowRoot &&
      container.mode === 'closed') {
      warn(`mounting on a ShadowRoot with \`{mode: "closed"}\` may lead to unpredictable bugs`);
    }
    return container;
  }

  function initDev() {
    {
      {
        console.info(`You are running a development build of Vue.\n` +
          `Make sure to use the production build (*.prod.js) when deploying for production.`);
      }
      initCustomFormatter();
    }
  }

  function defaultOnError(error) {
    throw error;
  }
  function createCompilerError(code, loc, messages, additionalMessage) {
    const msg = (messages || errorMessages)[code] + (additionalMessage || ``)
    ;
    const error = new SyntaxError(String(msg));
    error.code = code;
    error.loc = loc;
    return error;
  }
  const errorMessages = {
    // parse errors
    [0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */]: 'Illegal comment.',
    [1 /* CDATA_IN_HTML_CONTENT */]: 'CDATA section is allowed only in XML context.',
    [2 /* DUPLICATE_ATTRIBUTE */]: 'Duplicate attribute.',
    [3 /* END_TAG_WITH_ATTRIBUTES */]: 'End tag cannot have attributes.',
    [4 /* END_TAG_WITH_TRAILING_SOLIDUS */]: "Illegal '/' in tags.",
    [5 /* EOF_BEFORE_TAG_NAME */]: 'Unexpected EOF in tag.',
    [6 /* EOF_IN_CDATA */]: 'Unexpected EOF in CDATA section.',
    [7 /* EOF_IN_COMMENT */]: 'Unexpected EOF in comment.',
    [8 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */]: 'Unexpected EOF in script.',
    [9 /* EOF_IN_TAG */]: 'Unexpected EOF in tag.',
    [10 /* INCORRECTLY_CLOSED_COMMENT */]: 'Incorrectly closed comment.',
    [11 /* INCORRECTLY_OPENED_COMMENT */]: 'Incorrectly opened comment.',
    [12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */]: "Illegal tag name. Use '&lt;' to print '<'.",
    [13 /* MISSING_ATTRIBUTE_VALUE */]: 'Attribute value was expected.',
    [14 /* MISSING_END_TAG_NAME */]: 'End tag name was expected.',
    [15 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */]: 'Whitespace was expected.',
    [16 /* NESTED_COMMENT */]: "Unexpected '<!--' in comment.",
    [17 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */]: 'Attribute name cannot contain U+0022 ("), U+0027 (\'), and U+003C (<).',
    [18 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */]: 'Unquoted attribute value cannot contain U+0022 ("), U+0027 (\'), U+003C (<), U+003D (=), and U+0060 (`).',
    [19 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */]: "Attribute name cannot start with '='.",
    [21 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */]: "'<?' is allowed only in XML context.",
    [22 /* UNEXPECTED_SOLIDUS_IN_TAG */]: "Illegal '/' in tags.",
    // Vue-specific parse errors
    [23 /* X_INVALID_END_TAG */]: 'Invalid end tag.',
    [24 /* X_MISSING_END_TAG */]: 'Element is missing end tag.',
    [25 /* X_MISSING_INTERPOLATION_END */]: 'Interpolation end sign was not found.',
    [26 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */]: 'End bracket for dynamic directive argument was not found. ' +
    'Note that dynamic directive argument cannot contain spaces.',
    // transform errors
    [27 /* X_V_IF_NO_EXPRESSION */]: `v-if/v-else-if is missing expression.`,
    [28 /* X_V_IF_SAME_KEY */]: `v-if/else branches must use unique keys.`,
    [29 /* X_V_ELSE_NO_ADJACENT_IF */]: `v-else/v-else-if has no adjacent v-if.`,
    [30 /* X_V_FOR_NO_EXPRESSION */]: `v-for is missing expression.`,
    [31 /* X_V_FOR_MALFORMED_EXPRESSION */]: `v-for has invalid expression.`,
    [32 /* X_V_FOR_TEMPLATE_KEY_PLACEMENT */]: `<template v-for> key should be placed on the <template> tag.`,
    [33 /* X_V_BIND_NO_EXPRESSION */]: `v-bind is missing expression.`,
    [34 /* X_V_ON_NO_EXPRESSION */]: `v-on is missing expression.`,
    [35 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */]: `Unexpected custom directive on <slot> outlet.`,
    [36 /* X_V_SLOT_MIXED_SLOT_USAGE */]: `Mixed v-slot usage on both the component and nested <template>.` +
    `When there are multiple named slots, all slots should use <template> ` +
    `syntax to avoid scope ambiguity.`,
    [37 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */]: `Duplicate slot names found. `,
    [38 /* X_V_SLOT_EXTRANEOUS_DEFAULT_SLOT_CHILDREN */]: `Extraneous children found when component already has explicitly named ` +
    `default slot. These children will be ignored.`,
    [39 /* X_V_SLOT_MISPLACED */]: `v-slot can only be used on components or <template> tags.`,
    [40 /* X_V_MODEL_NO_EXPRESSION */]: `v-model is missing expression.`,
    [41 /* X_V_MODEL_MALFORMED_EXPRESSION */]: `v-model value must be a valid JavaScript member expression.`,
    [42 /* X_V_MODEL_ON_SCOPE_VARIABLE */]: `v-model cannot be used on v-for or v-slot scope variables because they are not writable.`,
    [43 /* X_INVALID_EXPRESSION */]: `Error parsing JavaScript expression: `,
    [44 /* X_KEEP_ALIVE_INVALID_CHILDREN */]: `<KeepAlive> expects exactly one child component.`,
    // generic errors
    [45 /* X_PREFIX_ID_NOT_SUPPORTED */]: `"prefixIdentifiers" option is not supported in this build of compiler.`,
    [46 /* X_MODULE_MODE_NOT_SUPPORTED */]: `ES module mode is not supported in this build of compiler.`,
    [47 /* X_CACHE_HANDLER_NOT_SUPPORTED */]: `"cacheHandlers" option is only supported when the "prefixIdentifiers" option is enabled.`,
    [48 /* X_SCOPE_ID_NOT_SUPPORTED */]: `"scopeId" option is only supported in module mode.`
  };

  const FRAGMENT = Symbol(`Fragment` );
  const TELEPORT = Symbol(`Teleport` );
  const SUSPENSE = Symbol(`Suspense` );
  const KEEP_ALIVE = Symbol(`KeepAlive` );
  const BASE_TRANSITION = Symbol(`BaseTransition` );
  const OPEN_BLOCK = Symbol(`openBlock` );
  const CREATE_BLOCK = Symbol(`createBlock` );
  const CREATE_VNODE = Symbol(`createVNode` );
  const CREATE_COMMENT = Symbol(`createCommentVNode` );
  const CREATE_TEXT = Symbol(`createTextVNode` );
  const CREATE_STATIC = Symbol(`createStaticVNode` );
  const RESOLVE_COMPONENT = Symbol(`resolveComponent` );
  const RESOLVE_DYNAMIC_COMPONENT = Symbol(`resolveDynamicComponent` );
  const RESOLVE_DIRECTIVE = Symbol(`resolveDirective` );
  const WITH_DIRECTIVES = Symbol(`withDirectives` );
  const RENDER_LIST = Symbol(`renderList` );
  const RENDER_SLOT = Symbol(`renderSlot` );
  const CREATE_SLOTS = Symbol(`createSlots` );
  const TO_DISPLAY_STRING = Symbol(`toDisplayString` );
  const MERGE_PROPS = Symbol(`mergeProps` );
  const TO_HANDLERS = Symbol(`toHandlers` );
  const CAMELIZE = Symbol(`camelize` );
  const CAPITALIZE = Symbol(`capitalize` );
  const TO_HANDLER_KEY = Symbol(`toHandlerKey` );
  const SET_BLOCK_TRACKING = Symbol(`setBlockTracking` );
  const PUSH_SCOPE_ID = Symbol(`pushScopeId` );
  const POP_SCOPE_ID = Symbol(`popScopeId` );
  const WITH_SCOPE_ID = Symbol(`withScopeId` );
  const WITH_CTX = Symbol(`withCtx` );
  const UNREF = Symbol(`unref` );
  const IS_REF = Symbol(`isRef` );
  // Name mapping for runtime helpers that need to be imported from 'vue' in
  // generated code. Make sure these are correctly exported in the runtime!
  // Using `any` here because TS doesn't allow symbols as index type.
  const helperNameMap = {
    [FRAGMENT]: `Fragment`,
    [TELEPORT]: `Teleport`,
    [SUSPENSE]: `Suspense`,
    [KEEP_ALIVE]: `KeepAlive`,
    [BASE_TRANSITION]: `BaseTransition`,
    [OPEN_BLOCK]: `openBlock`,
    [CREATE_BLOCK]: `createBlock`,
    [CREATE_VNODE]: `createVNode`,
    [CREATE_COMMENT]: `createCommentVNode`,
    [CREATE_TEXT]: `createTextVNode`,
    [CREATE_STATIC]: `createStaticVNode`,
    [RESOLVE_COMPONENT]: `resolveComponent`,
    [RESOLVE_DYNAMIC_COMPONENT]: `resolveDynamicComponent`,
    [RESOLVE_DIRECTIVE]: `resolveDirective`,
    [WITH_DIRECTIVES]: `withDirectives`,
    [RENDER_LIST]: `renderList`,
    [RENDER_SLOT]: `renderSlot`,
    [CREATE_SLOTS]: `createSlots`,
    [TO_DISPLAY_STRING]: `toDisplayString`,
    [MERGE_PROPS]: `mergeProps`,
    [TO_HANDLERS]: `toHandlers`,
    [CAMELIZE]: `camelize`,
    [CAPITALIZE]: `capitalize`,
    [TO_HANDLER_KEY]: `toHandlerKey`,
    [SET_BLOCK_TRACKING]: `setBlockTracking`,
    [PUSH_SCOPE_ID]: `pushScopeId`,
    [POP_SCOPE_ID]: `popScopeId`,
    [WITH_SCOPE_ID]: `withScopeId`,
    [WITH_CTX]: `withCtx`,
    [UNREF]: `unref`,
    [IS_REF]: `isRef`
  };
  function registerRuntimeHelpers(helpers) {
    Object.getOwnPropertySymbols(helpers).forEach(s => {
      helperNameMap[s] = helpers[s];
    });
  }

  // AST Utilities ---------------------------------------------------------------
  // Some expressions, e.g. sequence and conditional expressions, are never
  // associated with template nodes, so their source locations are just a stub.
  // Container types like CompoundExpression also don't need a real location.
  const locStub = {
    source: '',
    start: { line: 1, column: 1, offset: 0 },
    end: { line: 1, column: 1, offset: 0 }
  };
  function createRoot(children, loc = locStub) {
    return {
      type: 0 /* ROOT */,
      children,
      helpers: [],
      components: [],
      directives: [],
      hoists: [],
      imports: [],
      cached: 0,
      temps: 0,
      codegenNode: undefined,
      loc
    };
  }
  function createVNodeCall(context, tag, props, children, patchFlag, dynamicProps, directives, isBlock = false, disableTracking = false, loc = locStub) {
    if (context) {
      if (isBlock) {
        context.helper(OPEN_BLOCK);
        context.helper(CREATE_BLOCK);
      }
      else {
        context.helper(CREATE_VNODE);
      }
      if (directives) {
        context.helper(WITH_DIRECTIVES);
      }
    }
    return {
      type: 13 /* VNODE_CALL */,
      tag,
      props,
      children,
      patchFlag,
      dynamicProps,
      directives,
      isBlock,
      disableTracking,
      loc
    };
  }
  function createArrayExpression(elements, loc = locStub) {
    return {
      type: 17 /* JS_ARRAY_EXPRESSION */,
      loc,
      elements
    };
  }
  function createObjectExpression(properties, loc = locStub) {
    return {
      type: 15 /* JS_OBJECT_EXPRESSION */,
      loc,
      properties
    };
  }
  function createObjectProperty(key, value) {
    return {
      type: 16 /* JS_PROPERTY */,
      loc: locStub,
      key: isString(key) ? createSimpleExpression(key, true) : key,
      value
    };
  }
  function createSimpleExpression(content, isStatic, loc = locStub, constType = 0 /* NOT_CONSTANT */) {
    return {
      type: 4 /* SIMPLE_EXPRESSION */,
      loc,
      content,
      isStatic,
      constType: isStatic ? 3 /* CAN_STRINGIFY */ : constType
    };
  }
  function createCompoundExpression(children, loc = locStub) {
    return {
      type: 8 /* COMPOUND_EXPRESSION */,
      loc,
      children
    };
  }
  function createCallExpression(callee, args = [], loc = locStub) {
    return {
      type: 14 /* JS_CALL_EXPRESSION */,
      loc,
      callee,
      arguments: args
    };
  }
  function createFunctionExpression(params, returns = undefined, newline = false, isSlot = false, loc = locStub) {
    return {
      type: 18 /* JS_FUNCTION_EXPRESSION */,
      params,
      returns,
      newline,
      isSlot,
      loc
    };
  }
  function createConditionalExpression(test, consequent, alternate, newline = true) {
    return {
      type: 19 /* JS_CONDITIONAL_EXPRESSION */,
      test,
      consequent,
      alternate,
      newline,
      loc: locStub
    };
  }
  function createCacheExpression(index, value, isVNode = false) {
    return {
      type: 20 /* JS_CACHE_EXPRESSION */,
      index,
      value,
      isVNode,
      loc: locStub
    };
  }

  const isStaticExp = (p) => p.type === 4 /* SIMPLE_EXPRESSION */ && p.isStatic;
  const isBuiltInType = (tag, expected) => tag === expected || tag === hyphenate(expected);
  function isCoreComponent(tag) {
    if (isBuiltInType(tag, 'Teleport')) {
      return TELEPORT;
    }
    else if (isBuiltInType(tag, 'Suspense')) {
      return SUSPENSE;
    }
    else if (isBuiltInType(tag, 'KeepAlive')) {
      return KEEP_ALIVE;
    }
    else if (isBuiltInType(tag, 'BaseTransition')) {
      return BASE_TRANSITION;
    }
  }
  const nonIdentifierRE = /^\d|[^\$\w]/;
  const isSimpleIdentifier = (name) => !nonIdentifierRE.test(name);
  const memberExpRE = /^[A-Za-z_$\xA0-\uFFFF][\w$\xA0-\uFFFF]*(?:\s*\.\s*[A-Za-z_$\xA0-\uFFFF][\w$\xA0-\uFFFF]*|\[[^\]]+\])*$/;
  const isMemberExpression = (path) => {
    if (!path)
      return false;
    return memberExpRE.test(path.trim());
  };
  function getInnerRange(loc, offset, length) {
    const source = loc.source.substr(offset, length);
    const newLoc = {
      source,
      start: advancePositionWithClone(loc.start, loc.source, offset),
      end: loc.end
    };
    if (length != null) {
      newLoc.end = advancePositionWithClone(loc.start, loc.source, offset + length);
    }
    return newLoc;
  }
  function advancePositionWithClone(pos, source, numberOfCharacters = source.length) {
    return advancePositionWithMutation(extend({}, pos), source, numberOfCharacters);
  }
  // advance by mutation without cloning (for performance reasons), since this
  // gets called a lot in the parser
  function advancePositionWithMutation(pos, source, numberOfCharacters = source.length) {
    let linesCount = 0;
    let lastNewLinePos = -1;
    for (let i = 0; i < numberOfCharacters; i++) {
      if (source.charCodeAt(i) === 10 /* newline char code */) {
        linesCount++;
        lastNewLinePos = i;
      }
    }
    pos.offset += numberOfCharacters;
    pos.line += linesCount;
    pos.column =
      lastNewLinePos === -1
        ? pos.column + numberOfCharacters
        : numberOfCharacters - lastNewLinePos;
    return pos;
  }
  function assert(condition, msg) {
    /* istanbul ignore if */
    if (!condition) {
      throw new Error(msg || `unexpected compiler condition`);
    }
  }
  function findDir(node, name, allowEmpty = false) {
    for (let i = 0; i < node.props.length; i++) {
      const p = node.props[i];
      if (p.type === 7 /* DIRECTIVE */ &&
        (allowEmpty || p.exp) &&
        (isString(name) ? p.name === name : name.test(p.name))) {
        return p;
      }
    }
  }
  function findProp(node, name, dynamicOnly = false, allowEmpty = false) {
    for (let i = 0; i < node.props.length; i++) {
      const p = node.props[i];
      if (p.type === 6 /* ATTRIBUTE */) {
        if (dynamicOnly)
          continue;
        if (p.name === name && (p.value || allowEmpty)) {
          return p;
        }
      }
      else if (p.name === 'bind' &&
        (p.exp || allowEmpty) &&
        isBindKey(p.arg, name)) {
        return p;
      }
    }
  }
  function isBindKey(arg, name) {
    return !!(arg && isStaticExp(arg) && arg.content === name);
  }
  function hasDynamicKeyVBind(node) {
    return node.props.some(p => p.type === 7 /* DIRECTIVE */ &&
      p.name === 'bind' &&
      (!p.arg || // v-bind="obj"
        p.arg.type !== 4 /* SIMPLE_EXPRESSION */ || // v-bind:[_ctx.foo]
        !p.arg.isStatic) // v-bind:[foo]
    );
  }
  function isText(node) {
    return node.type === 5 /* INTERPOLATION */ || node.type === 2 /* TEXT */;
  }
  function isVSlot(p) {
    return p.type === 7 /* DIRECTIVE */ && p.name === 'slot';
  }
  function isTemplateNode(node) {
    return (node.type === 1 /* ELEMENT */ && node.tagType === 3 /* TEMPLATE */);
  }
  function isSlotOutlet(node) {
    return node.type === 1 /* ELEMENT */ && node.tagType === 2 /* SLOT */;
  }
  function injectProp(node, prop, context) {
    let propsWithInjection;
    const props = node.type === 13 /* VNODE_CALL */ ? node.props : node.arguments[2];
    if (props == null || isString(props)) {
      propsWithInjection = createObjectExpression([prop]);
    }
    else if (props.type === 14 /* JS_CALL_EXPRESSION */) {
      // merged props... add ours
      // only inject key to object literal if it's the first argument so that
      // if doesn't override user provided keys
      const first = props.arguments[0];
      if (!isString(first) && first.type === 15 /* JS_OBJECT_EXPRESSION */) {
        first.properties.unshift(prop);
      }
      else {
        if (props.callee === TO_HANDLERS) {
          // #2366
          propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
            createObjectExpression([prop]),
            props
          ]);
        }
        else {
          props.arguments.unshift(createObjectExpression([prop]));
        }
      }
      !propsWithInjection && (propsWithInjection = props);
    }
    else if (props.type === 15 /* JS_OBJECT_EXPRESSION */) {
      let alreadyExists = false;
      // check existing key to avoid overriding user provided keys
      if (prop.key.type === 4 /* SIMPLE_EXPRESSION */) {
        const propKeyName = prop.key.content;
        alreadyExists = props.properties.some(p => p.key.type === 4 /* SIMPLE_EXPRESSION */ &&
          p.key.content === propKeyName);
      }
      if (!alreadyExists) {
        props.properties.unshift(prop);
      }
      propsWithInjection = props;
    }
    else {
      // single v-bind with expression, return a merged replacement
      propsWithInjection = createCallExpression(context.helper(MERGE_PROPS), [
        createObjectExpression([prop]),
        props
      ]);
    }
    if (node.type === 13 /* VNODE_CALL */) {
      node.props = propsWithInjection;
    }
    else {
      node.arguments[2] = propsWithInjection;
    }
  }
  function toValidAssetId(name, type) {
    return `_${type}_${name.replace(/[^\w]/g, '_')}`;
  }

  // The default decoder only provides escapes for characters reserved as part of
  // the template syntax, and is only used if the custom renderer did not provide
  // a platform-specific decoder.
  const decodeRE = /&(gt|lt|amp|apos|quot);/g;
  const decodeMap = {
    gt: '>',
    lt: '<',
    amp: '&',
    apos: "'",
    quot: '"'
  };
  const defaultParserOptions = {
    delimiters: [`{{`, `}}`],
    getNamespace: () => 0 /* HTML */,
    getTextMode: () => 0 /* DATA */,
    isVoidTag: NO,
    isPreTag: NO,
    isCustomElement: NO,
    decodeEntities: (rawText) => rawText.replace(decodeRE, (_, p1) => decodeMap[p1]),
    onError: defaultOnError,
    comments: false
  };
  function baseParse(content, options = {}) {
    const context = createParserContext(content, options);
    const start = getCursor(context);
    return createRoot(parseChildren(context, 0 /* DATA */, []), getSelection(context, start));
  }
  function createParserContext(content, rawOptions) {
    const options = extend({}, defaultParserOptions);
    for (const key in rawOptions) {
      // @ts-ignore
      options[key] = rawOptions[key] || defaultParserOptions[key];
    }
    return {
      options,
      column: 1,
      line: 1,
      offset: 0,
      originalSource: content,
      source: content,
      inPre: false,
      inVPre: false
    };
  }
  function parseChildren(context, mode, ancestors) {
    const parent = last(ancestors);
    const ns = parent ? parent.ns : 0 /* HTML */;
    const nodes = [];
    while (!isEnd(context, mode, ancestors)) {
      const s = context.source;
      let node = undefined;
      if (mode === 0 /* DATA */ || mode === 1 /* RCDATA */) {
        if (!context.inVPre && startsWith(s, context.options.delimiters[0])) {
          // '{{'
          node = parseInterpolation(context, mode);
        }
        else if (mode === 0 /* DATA */ && s[0] === '<') {
          // https://html.spec.whatwg.org/multipage/parsing.html#tag-open-state
          if (s.length === 1) {
            emitError(context, 5 /* EOF_BEFORE_TAG_NAME */, 1);
          }
          else if (s[1] === '!') {
            // https://html.spec.whatwg.org/multipage/parsing.html#markup-declaration-open-state
            if (startsWith(s, '<!--')) {
              node = parseComment(context);
            }
            else if (startsWith(s, '<!DOCTYPE')) {
              // Ignore DOCTYPE by a limitation.
              node = parseBogusComment(context);
            }
            else if (startsWith(s, '<![CDATA[')) {
              if (ns !== 0 /* HTML */) {
                node = parseCDATA(context, ancestors);
              }
              else {
                emitError(context, 1 /* CDATA_IN_HTML_CONTENT */);
                node = parseBogusComment(context);
              }
            }
            else {
              emitError(context, 11 /* INCORRECTLY_OPENED_COMMENT */);
              node = parseBogusComment(context);
            }
          }
          else if (s[1] === '/') {
            // https://html.spec.whatwg.org/multipage/parsing.html#end-tag-open-state
            if (s.length === 2) {
              emitError(context, 5 /* EOF_BEFORE_TAG_NAME */, 2);
            }
            else if (s[2] === '>') {
              emitError(context, 14 /* MISSING_END_TAG_NAME */, 2);
              advanceBy(context, 3);
              continue;
            }
            else if (/[a-z]/i.test(s[2])) {
              emitError(context, 23 /* X_INVALID_END_TAG */);
              parseTag(context, 1 /* End */, parent);
              continue;
            }
            else {
              emitError(context, 12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 2);
              node = parseBogusComment(context);
            }
          }
          else if (/[a-z]/i.test(s[1])) {
            node = parseElement(context, ancestors);
          }
          else if (s[1] === '?') {
            emitError(context, 21 /* UNEXPECTED_QUESTION_MARK_INSTEAD_OF_TAG_NAME */, 1);
            node = parseBogusComment(context);
          }
          else {
            emitError(context, 12 /* INVALID_FIRST_CHARACTER_OF_TAG_NAME */, 1);
          }
        }
      }
      if (!node) {
        node = parseText(context, mode);
      }
      if (isArray(node)) {
        for (let i = 0; i < node.length; i++) {
          pushNode(nodes, node[i]);
        }
      }
      else {
        pushNode(nodes, node);
      }
    }
    // Whitespace management for more efficient output
    // (same as v2 whitespace: 'condense')
    let removedWhitespace = false;
    if (mode !== 2 /* RAWTEXT */ && mode !== 1 /* RCDATA */) {
      for (let i = 0; i < nodes.length; i++) {
        const node = nodes[i];
        if (!context.inPre && node.type === 2 /* TEXT */) {
          if (!/[^\t\r\n\f ]/.test(node.content)) {
            const prev = nodes[i - 1];
            const next = nodes[i + 1];
            // If:
            // - the whitespace is the first or last node, or:
            // - the whitespace is adjacent to a comment, or:
            // - the whitespace is between two elements AND contains newline
            // Then the whitespace is ignored.
            if (!prev ||
              !next ||
              prev.type === 3 /* COMMENT */ ||
              next.type === 3 /* COMMENT */ ||
              (prev.type === 1 /* ELEMENT */ &&
                next.type === 1 /* ELEMENT */ &&
                /[\r\n]/.test(node.content))) {
              removedWhitespace = true;
              nodes[i] = null;
            }
            else {
              // Otherwise, condensed consecutive whitespace inside the text
              // down to a single space
              node.content = ' ';
            }
          }
          else {
            node.content = node.content.replace(/[\t\r\n\f ]+/g, ' ');
          }
        }
      }
      if (context.inPre && parent && context.options.isPreTag(parent.tag)) {
        // remove leading newline per html spec
        // https://html.spec.whatwg.org/multipage/grouping-content.html#the-pre-element
        const first = nodes[0];
        if (first && first.type === 2 /* TEXT */) {
          first.content = first.content.replace(/^\r?\n/, '');
        }
      }
    }
    return removedWhitespace ? nodes.filter(Boolean) : nodes;
  }
  function pushNode(nodes, node) {
    if (node.type === 2 /* TEXT */) {
      const prev = last(nodes);
      // Merge if both this and the previous node are text and those are
      // consecutive. This happens for cases like "a < b".
      if (prev &&
        prev.type === 2 /* TEXT */ &&
        prev.loc.end.offset === node.loc.start.offset) {
        prev.content += node.content;
        prev.loc.end = node.loc.end;
        prev.loc.source += node.loc.source;
        return;
      }
    }
    nodes.push(node);
  }
  function parseCDATA(context, ancestors) {
    advanceBy(context, 9);
    const nodes = parseChildren(context, 3 /* CDATA */, ancestors);
    if (context.source.length === 0) {
      emitError(context, 6 /* EOF_IN_CDATA */);
    }
    else {
      advanceBy(context, 3);
    }
    return nodes;
  }
  function parseComment(context) {
    const start = getCursor(context);
    let content;
    // Regular comment.
    const match = /--(\!)?>/.exec(context.source);
    if (!match) {
      content = context.source.slice(4);
      advanceBy(context, context.source.length);
      emitError(context, 7 /* EOF_IN_COMMENT */);
    }
    else {
      if (match.index <= 3) {
        emitError(context, 0 /* ABRUPT_CLOSING_OF_EMPTY_COMMENT */);
      }
      if (match[1]) {
        emitError(context, 10 /* INCORRECTLY_CLOSED_COMMENT */);
      }
      content = context.source.slice(4, match.index);
      // Advancing with reporting nested comments.
      const s = context.source.slice(0, match.index);
      let prevIndex = 1, nestedIndex = 0;
      while ((nestedIndex = s.indexOf('<!--', prevIndex)) !== -1) {
        advanceBy(context, nestedIndex - prevIndex + 1);
        if (nestedIndex + 4 < s.length) {
          emitError(context, 16 /* NESTED_COMMENT */);
        }
        prevIndex = nestedIndex + 1;
      }
      advanceBy(context, match.index + match[0].length - prevIndex + 1);
    }
    return {
      type: 3 /* COMMENT */,
      content,
      loc: getSelection(context, start)
    };
  }
  function parseBogusComment(context) {
    const start = getCursor(context);
    const contentStart = context.source[1] === '?' ? 1 : 2;
    let content;
    const closeIndex = context.source.indexOf('>');
    if (closeIndex === -1) {
      content = context.source.slice(contentStart);
      advanceBy(context, context.source.length);
    }
    else {
      content = context.source.slice(contentStart, closeIndex);
      advanceBy(context, closeIndex + 1);
    }
    return {
      type: 3 /* COMMENT */,
      content,
      loc: getSelection(context, start)
    };
  }
  function parseElement(context, ancestors) {
    // Start tag.
    const wasInPre = context.inPre;
    const wasInVPre = context.inVPre;
    const parent = last(ancestors);
    const element = parseTag(context, 0 /* Start */, parent);
    const isPreBoundary = context.inPre && !wasInPre;
    const isVPreBoundary = context.inVPre && !wasInVPre;
    if (element.isSelfClosing || context.options.isVoidTag(element.tag)) {
      return element;
    }
    // Children.
    ancestors.push(element);
    const mode = context.options.getTextMode(element, parent);
    const children = parseChildren(context, mode, ancestors);
    ancestors.pop();
    element.children = children;
    // End tag.
    if (startsWithEndTagOpen(context.source, element.tag)) {
      parseTag(context, 1 /* End */, parent);
    }
    else {
      emitError(context, 24 /* X_MISSING_END_TAG */, 0, element.loc.start);
      if (context.source.length === 0 && element.tag.toLowerCase() === 'script') {
        const first = children[0];
        if (first && startsWith(first.loc.source, '<!--')) {
          emitError(context, 8 /* EOF_IN_SCRIPT_HTML_COMMENT_LIKE_TEXT */);
        }
      }
    }
    element.loc = getSelection(context, element.loc.start);
    if (isPreBoundary) {
      context.inPre = false;
    }
    if (isVPreBoundary) {
      context.inVPre = false;
    }
    return element;
  }
  const isSpecialTemplateDirective = /*#__PURE__*/ makeMap(`if,else,else-if,for,slot`);
  /**
   * Parse a tag (E.g. `<div id=a>`) with that type (start tag or end tag).
   */
  function parseTag(context, type, parent) {
    // Tag open.
    const start = getCursor(context);
    const match = /^<\/?([a-z][^\t\r\n\f />]*)/i.exec(context.source);
    const tag = match[1];
    const ns = context.options.getNamespace(tag, parent);
    advanceBy(context, match[0].length);
    advanceSpaces(context);
    // save current state in case we need to re-parse attributes with v-pre
    const cursor = getCursor(context);
    const currentSource = context.source;
    // Attributes.
    let props = parseAttributes(context, type);
    // check <pre> tag
    if (context.options.isPreTag(tag)) {
      context.inPre = true;
    }
    // check v-pre
    if (!context.inVPre &&
      props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'pre')) {
      context.inVPre = true;
      // reset context
      extend(context, cursor);
      context.source = currentSource;
      // re-parse attrs and filter out v-pre itself
      props = parseAttributes(context, type).filter(p => p.name !== 'v-pre');
    }
    // Tag close.
    let isSelfClosing = false;
    if (context.source.length === 0) {
      emitError(context, 9 /* EOF_IN_TAG */);
    }
    else {
      isSelfClosing = startsWith(context.source, '/>');
      if (type === 1 /* End */ && isSelfClosing) {
        emitError(context, 4 /* END_TAG_WITH_TRAILING_SOLIDUS */);
      }
      advanceBy(context, isSelfClosing ? 2 : 1);
    }
    let tagType = 0 /* ELEMENT */;
    const options = context.options;
    if (!context.inVPre && !options.isCustomElement(tag)) {
      const hasVIs = props.some(p => p.type === 7 /* DIRECTIVE */ && p.name === 'is');
      if (options.isNativeTag && !hasVIs) {
        if (!options.isNativeTag(tag))
          tagType = 1 /* COMPONENT */;
      }
      else if (hasVIs ||
        isCoreComponent(tag) ||
        (options.isBuiltInComponent && options.isBuiltInComponent(tag)) ||
        /^[A-Z]/.test(tag) ||
        tag === 'component') {
        tagType = 1 /* COMPONENT */;
      }
      if (tag === 'slot') {
        tagType = 2 /* SLOT */;
      }
      else if (tag === 'template' &&
        props.some(p => {
          return (p.type === 7 /* DIRECTIVE */ && isSpecialTemplateDirective(p.name));
        })) {
        tagType = 3 /* TEMPLATE */;
      }
    }
    return {
      type: 1 /* ELEMENT */,
      ns,
      tag,
      tagType,
      props,
      isSelfClosing,
      children: [],
      loc: getSelection(context, start),
      codegenNode: undefined // to be created during transform phase
    };
  }
  function parseAttributes(context, type) {
    const props = [];
    const attributeNames = new Set();
    while (context.source.length > 0 &&
    !startsWith(context.source, '>') &&
    !startsWith(context.source, '/>')) {
      if (startsWith(context.source, '/')) {
        emitError(context, 22 /* UNEXPECTED_SOLIDUS_IN_TAG */);
        advanceBy(context, 1);
        advanceSpaces(context);
        continue;
      }
      if (type === 1 /* End */) {
        emitError(context, 3 /* END_TAG_WITH_ATTRIBUTES */);
      }
      const attr = parseAttribute(context, attributeNames);
      if (type === 0 /* Start */) {
        props.push(attr);
      }
      if (/^[^\t\r\n\f />]/.test(context.source)) {
        emitError(context, 15 /* MISSING_WHITESPACE_BETWEEN_ATTRIBUTES */);
      }
      advanceSpaces(context);
    }
    return props;
  }
  function parseAttribute(context, nameSet) {
    // Name.
    const start = getCursor(context);
    const match = /^[^\t\r\n\f />][^\t\r\n\f />=]*/.exec(context.source);
    const name = match[0];
    if (nameSet.has(name)) {
      emitError(context, 2 /* DUPLICATE_ATTRIBUTE */);
    }
    nameSet.add(name);
    if (name[0] === '=') {
      emitError(context, 19 /* UNEXPECTED_EQUALS_SIGN_BEFORE_ATTRIBUTE_NAME */);
    }
    {
      const pattern = /["'<]/g;
      let m;
      while ((m = pattern.exec(name))) {
        emitError(context, 17 /* UNEXPECTED_CHARACTER_IN_ATTRIBUTE_NAME */, m.index);
      }
    }
    advanceBy(context, name.length);
    // Value
    let value = undefined;
    if (/^[\t\r\n\f ]*=/.test(context.source)) {
      advanceSpaces(context);
      advanceBy(context, 1);
      advanceSpaces(context);
      value = parseAttributeValue(context);
      if (!value) {
        emitError(context, 13 /* MISSING_ATTRIBUTE_VALUE */);
      }
    }
    const loc = getSelection(context, start);
    if (!context.inVPre && /^(v-|:|@|#)/.test(name)) {
      const match = /(?:^v-([a-z0-9-]+))?(?:(?::|^@|^#)(\[[^\]]+\]|[^\.]+))?(.+)?$/i.exec(name);
      const dirName = match[1] ||
        (startsWith(name, ':') ? 'bind' : startsWith(name, '@') ? 'on' : 'slot');
      let arg;
      if (match[2]) {
        const isSlot = dirName === 'slot';
        const startOffset = name.lastIndexOf(match[2]);
        const loc = getSelection(context, getNewPosition(context, start, startOffset), getNewPosition(context, start, startOffset + match[2].length + ((isSlot && match[3]) || '').length));
        let content = match[2];
        let isStatic = true;
        if (content.startsWith('[')) {
          isStatic = false;
          if (!content.endsWith(']')) {
            emitError(context, 26 /* X_MISSING_DYNAMIC_DIRECTIVE_ARGUMENT_END */);
          }
          content = content.substr(1, content.length - 2);
        }
        else if (isSlot) {
          // #1241 special case for v-slot: vuetify relies extensively on slot
          // names containing dots. v-slot doesn't have any modifiers and Vue 2.x
          // supports such usage so we are keeping it consistent with 2.x.
          content += match[3] || '';
        }
        arg = {
          type: 4 /* SIMPLE_EXPRESSION */,
          content,
          isStatic,
          constType: isStatic
            ? 3 /* CAN_STRINGIFY */
            : 0 /* NOT_CONSTANT */,
          loc
        };
      }
      if (value && value.isQuoted) {
        const valueLoc = value.loc;
        valueLoc.start.offset++;
        valueLoc.start.column++;
        valueLoc.end = advancePositionWithClone(valueLoc.start, value.content);
        valueLoc.source = valueLoc.source.slice(1, -1);
      }
      return {
        type: 7 /* DIRECTIVE */,
        name: dirName,
        exp: value && {
          type: 4 /* SIMPLE_EXPRESSION */,
          content: value.content,
          isStatic: false,
          // Treat as non-constant by default. This can be potentially set to
          // other values by `transformExpression` to make it eligible for hoisting.
          constType: 0 /* NOT_CONSTANT */,
          loc: value.loc
        },
        arg,
        modifiers: match[3] ? match[3].substr(1).split('.') : [],
        loc
      };
    }
    return {
      type: 6 /* ATTRIBUTE */,
      name,
      value: value && {
        type: 2 /* TEXT */,
        content: value.content,
        loc: value.loc
      },
      loc
    };
  }
  function parseAttributeValue(context) {
    const start = getCursor(context);
    let content;
    const quote = context.source[0];
    const isQuoted = quote === `"` || quote === `'`;
    if (isQuoted) {
      // Quoted value.
      advanceBy(context, 1);
      const endIndex = context.source.indexOf(quote);
      if (endIndex === -1) {
        content = parseTextData(context, context.source.length, 4 /* ATTRIBUTE_VALUE */);
      }
      else {
        content = parseTextData(context, endIndex, 4 /* ATTRIBUTE_VALUE */);
        advanceBy(context, 1);
      }
    }
    else {
      // Unquoted
      const match = /^[^\t\r\n\f >]+/.exec(context.source);
      if (!match) {
        return undefined;
      }
      const unexpectedChars = /["'<=`]/g;
      let m;
      while ((m = unexpectedChars.exec(match[0]))) {
        emitError(context, 18 /* UNEXPECTED_CHARACTER_IN_UNQUOTED_ATTRIBUTE_VALUE */, m.index);
      }
      content = parseTextData(context, match[0].length, 4 /* ATTRIBUTE_VALUE */);
    }
    return { content, isQuoted, loc: getSelection(context, start) };
  }
  function parseInterpolation(context, mode) {
    const [open, close] = context.options.delimiters;
    const closeIndex = context.source.indexOf(close, open.length);
    if (closeIndex === -1) {
      emitError(context, 25 /* X_MISSING_INTERPOLATION_END */);
      return undefined;
    }
    const start = getCursor(context);
    advanceBy(context, open.length);
    const innerStart = getCursor(context);
    const innerEnd = getCursor(context);
    const rawContentLength = closeIndex - open.length;
    const rawContent = context.source.slice(0, rawContentLength);
    const preTrimContent = parseTextData(context, rawContentLength, mode);
    const content = preTrimContent.trim();
    const startOffset = preTrimContent.indexOf(content);
    if (startOffset > 0) {
      advancePositionWithMutation(innerStart, rawContent, startOffset);
    }
    const endOffset = rawContentLength - (preTrimContent.length - content.length - startOffset);
    advancePositionWithMutation(innerEnd, rawContent, endOffset);
    advanceBy(context, close.length);
    return {
      type: 5 /* INTERPOLATION */,
      content: {
        type: 4 /* SIMPLE_EXPRESSION */,
        isStatic: false,
        // Set `isConstant` to false by default and will decide in transformExpression
        constType: 0 /* NOT_CONSTANT */,
        content,
        loc: getSelection(context, innerStart, innerEnd)
      },
      loc: getSelection(context, start)
    };
  }
  function parseText(context, mode) {
    const endTokens = ['<', context.options.delimiters[0]];
    if (mode === 3 /* CDATA */) {
      endTokens.push(']]>');
    }
    let endIndex = context.source.length;
    for (let i = 0; i < endTokens.length; i++) {
      const index = context.source.indexOf(endTokens[i], 1);
      if (index !== -1 && endIndex > index) {
        endIndex = index;
      }
    }
    const start = getCursor(context);
    const content = parseTextData(context, endIndex, mode);
    return {
      type: 2 /* TEXT */,
      content,
      loc: getSelection(context, start)
    };
  }
  /**
   * Get text data with a given length from the current location.
   * This translates HTML entities in the text data.
   */
  function parseTextData(context, length, mode) {
    const rawText = context.source.slice(0, length);
    advanceBy(context, length);
    if (mode === 2 /* RAWTEXT */ ||
      mode === 3 /* CDATA */ ||
      rawText.indexOf('&') === -1) {
      return rawText;
    }
    else {
      // DATA or RCDATA containing "&"". Entity decoding required.
      return context.options.decodeEntities(rawText, mode === 4 /* ATTRIBUTE_VALUE */);
    }
  }
  function getCursor(context) {
    const { column, line, offset } = context;
    return { column, line, offset };
  }
  function getSelection(context, start, end) {
    end = end || getCursor(context);
    return {
      start,
      end,
      source: context.originalSource.slice(start.offset, end.offset)
    };
  }
  function last(xs) {
    return xs[xs.length - 1];
  }
  function startsWith(source, searchString) {
    return source.startsWith(searchString);
  }
  function advanceBy(context, numberOfCharacters) {
    const { source } = context;
    advancePositionWithMutation(context, source, numberOfCharacters);
    context.source = source.slice(numberOfCharacters);
  }
  function advanceSpaces(context) {
    const match = /^[\t\r\n\f ]+/.exec(context.source);
    if (match) {
      advanceBy(context, match[0].length);
    }
  }
  function getNewPosition(context, start, numberOfCharacters) {
    return advancePositionWithClone(start, context.originalSource.slice(start.offset, numberOfCharacters), numberOfCharacters);
  }
  function emitError(context, code, offset, loc = getCursor(context)) {
    if (offset) {
      loc.offset += offset;
      loc.column += offset;
    }
    context.options.onError(createCompilerError(code, {
      start: loc,
      end: loc,
      source: ''
    }));
  }
  function isEnd(context, mode, ancestors) {
    const s = context.source;
    switch (mode) {
      case 0 /* DATA */:
        if (startsWith(s, '</')) {
          // TODO: probably bad performance
          for (let i = ancestors.length - 1; i >= 0; --i) {
            if (startsWithEndTagOpen(s, ancestors[i].tag)) {
              return true;
            }
          }
        }
        break;
      case 1 /* RCDATA */:
      case 2 /* RAWTEXT */: {
        const parent = last(ancestors);
        if (parent && startsWithEndTagOpen(s, parent.tag)) {
          return true;
        }
        break;
      }
      case 3 /* CDATA */:
        if (startsWith(s, ']]>')) {
          return true;
        }
        break;
    }
    return !s;
  }
  function startsWithEndTagOpen(source, tag) {
    return (startsWith(source, '</') &&
      source.substr(2, tag.length).toLowerCase() === tag.toLowerCase() &&
      /[\t\r\n\f />]/.test(source[2 + tag.length] || '>'));
  }

  function hoistStatic(root, context) {
    walk(root, context,
      // Root node is unfortunately non-hoistable due to potential parent
      // fallthrough attributes.
      isSingleElementRoot(root, root.children[0]));
  }
  function isSingleElementRoot(root, child) {
    const { children } = root;
    return (children.length === 1 &&
      child.type === 1 /* ELEMENT */ &&
      !isSlotOutlet(child));
  }
  function walk(node, context, doNotHoistNode = false) {
    let hasHoistedNode = false;
    // Some transforms, e.g. transformAssetUrls from @vue/compiler-sfc, replaces
    // static bindings with expressions. These expressions are guaranteed to be
    // constant so they are still eligible for hoisting, but they are only
    // available at runtime and therefore cannot be evaluated ahead of time.
    // This is only a concern for pre-stringification (via transformHoist by
    // @vue/compiler-dom), but doing it here allows us to perform only one full
    // walk of the AST and allow `stringifyStatic` to stop walking as soon as its
    // stringficiation threshold is met.
    let canStringify = true;
    const { children } = node;
    for (let i = 0; i < children.length; i++) {
      const child = children[i];
      // only plain elements & text calls are eligible for hoisting.
      if (child.type === 1 /* ELEMENT */ &&
        child.tagType === 0 /* ELEMENT */) {
        const constantType = doNotHoistNode
          ? 0 /* NOT_CONSTANT */
          : getConstantType(child, context);
        if (constantType > 0 /* NOT_CONSTANT */) {
          if (constantType < 3 /* CAN_STRINGIFY */) {
            canStringify = false;
          }
          if (constantType >= 2 /* CAN_HOIST */) {
            child.codegenNode.patchFlag =
              -1 /* HOISTED */ + (` /* HOISTED */` );
            child.codegenNode = context.hoist(child.codegenNode);
            hasHoistedNode = true;
            continue;
          }
        }
        else {
          // node may contain dynamic children, but its props may be eligible for
          // hoisting.
          const codegenNode = child.codegenNode;
          if (codegenNode.type === 13 /* VNODE_CALL */) {
            const flag = getPatchFlag(codegenNode);
            if ((!flag ||
              flag === 512 /* NEED_PATCH */ ||
              flag === 1 /* TEXT */) &&
              getGeneratedPropsConstantType(child, context) >=
              2 /* CAN_HOIST */) {
              const props = getNodeProps(child);
              if (props) {
                codegenNode.props = context.hoist(props);
              }
            }
          }
        }
      }
      else if (child.type === 12 /* TEXT_CALL */) {
        const contentType = getConstantType(child.content, context);
        if (contentType > 0) {
          if (contentType < 3 /* CAN_STRINGIFY */) {
            canStringify = false;
          }
          if (contentType >= 2 /* CAN_HOIST */) {
            child.codegenNode = context.hoist(child.codegenNode);
            hasHoistedNode = true;
          }
        }
      }
      // walk further
      if (child.type === 1 /* ELEMENT */) {
        const isComponent = child.tagType === 1 /* COMPONENT */;
        if (isComponent) {
          context.scopes.vSlot++;
        }
        walk(child, context);
        if (isComponent) {
          context.scopes.vSlot--;
        }
      }
      else if (child.type === 11 /* FOR */) {
        // Do not hoist v-for single child because it has to be a block
        walk(child, context, child.children.length === 1);
      }
      else if (child.type === 9 /* IF */) {
        for (let i = 0; i < child.branches.length; i++) {
          // Do not hoist v-if single child because it has to be a block
          walk(child.branches[i], context, child.branches[i].children.length === 1);
        }
      }
    }
    if (canStringify && hasHoistedNode && context.transformHoist) {
      context.transformHoist(children, context, node);
    }
  }
  function getConstantType(node, context) {
    const { constantCache } = context;
    switch (node.type) {
      case 1 /* ELEMENT */:
        if (node.tagType !== 0 /* ELEMENT */) {
          return 0 /* NOT_CONSTANT */;
        }
        const cached = constantCache.get(node);
        if (cached !== undefined) {
          return cached;
        }
        const codegenNode = node.codegenNode;
        if (codegenNode.type !== 13 /* VNODE_CALL */) {
          return 0 /* NOT_CONSTANT */;
        }
        const flag = getPatchFlag(codegenNode);
        if (!flag) {
          let returnType = 3 /* CAN_STRINGIFY */;
          // Element itself has no patch flag. However we still need to check:
          // 1. Even for a node with no patch flag, it is possible for it to contain
          // non-hoistable expressions that refers to scope variables, e.g. compiler
          // injected keys or cached event handlers. Therefore we need to always
          // check the codegenNode's props to be sure.
          const generatedPropsType = getGeneratedPropsConstantType(node, context);
          if (generatedPropsType === 0 /* NOT_CONSTANT */) {
            constantCache.set(node, 0 /* NOT_CONSTANT */);
            return 0 /* NOT_CONSTANT */;
          }
          if (generatedPropsType < returnType) {
            returnType = generatedPropsType;
          }
          // 2. its children.
          for (let i = 0; i < node.children.length; i++) {
            const childType = getConstantType(node.children[i], context);
            if (childType === 0 /* NOT_CONSTANT */) {
              constantCache.set(node, 0 /* NOT_CONSTANT */);
              return 0 /* NOT_CONSTANT */;
            }
            if (childType < returnType) {
              returnType = childType;
            }
          }
          // 3. if the type is not already CAN_SKIP_PATCH which is the lowest non-0
          // type, check if any of the props can cause the type to be lowered
          // we can skip can_patch because it's guaranteed by the absence of a
          // patchFlag.
          if (returnType > 1 /* CAN_SKIP_PATCH */) {
            for (let i = 0; i < node.props.length; i++) {
              const p = node.props[i];
              if (p.type === 7 /* DIRECTIVE */ && p.name === 'bind' && p.exp) {
                const expType = getConstantType(p.exp, context);
                if (expType === 0 /* NOT_CONSTANT */) {
                  constantCache.set(node, 0 /* NOT_CONSTANT */);
                  return 0 /* NOT_CONSTANT */;
                }
                if (expType < returnType) {
                  returnType = expType;
                }
              }
            }
          }
          // only svg/foreignObject could be block here, however if they are
          // static then they don't need to be blocks since there will be no
          // nested updates.
          if (codegenNode.isBlock) {
            context.removeHelper(OPEN_BLOCK);
            context.removeHelper(CREATE_BLOCK);
            codegenNode.isBlock = false;
            context.helper(CREATE_VNODE);
          }
          constantCache.set(node, returnType);
          return returnType;
        }
        else {
          constantCache.set(node, 0 /* NOT_CONSTANT */);
          return 0 /* NOT_CONSTANT */;
        }
      case 2 /* TEXT */:
      case 3 /* COMMENT */:
        return 3 /* CAN_STRINGIFY */;
      case 9 /* IF */:
      case 11 /* FOR */:
      case 10 /* IF_BRANCH */:
        return 0 /* NOT_CONSTANT */;
      case 5 /* INTERPOLATION */:
      case 12 /* TEXT_CALL */:
        return getConstantType(node.content, context);
      case 4 /* SIMPLE_EXPRESSION */:
        return node.constType;
      case 8 /* COMPOUND_EXPRESSION */:
        let returnType = 3 /* CAN_STRINGIFY */;
        for (let i = 0; i < node.children.length; i++) {
          const child = node.children[i];
          if (isString(child) || isSymbol(child)) {
            continue;
          }
          const childType = getConstantType(child, context);
          if (childType === 0 /* NOT_CONSTANT */) {
            return 0 /* NOT_CONSTANT */;
          }
          else if (childType < returnType) {
            returnType = childType;
          }
        }
        return returnType;
      default:
        return 0 /* NOT_CONSTANT */;
    }
  }
  function getGeneratedPropsConstantType(node, context) {
    let returnType = 3 /* CAN_STRINGIFY */;
    const props = getNodeProps(node);
    if (props && props.type === 15 /* JS_OBJECT_EXPRESSION */) {
      const { properties } = props;
      for (let i = 0; i < properties.length; i++) {
        const { key, value } = properties[i];
        const keyType = getConstantType(key, context);
        if (keyType === 0 /* NOT_CONSTANT */) {
          return keyType;
        }
        if (keyType < returnType) {
          returnType = keyType;
        }
        if (value.type !== 4 /* SIMPLE_EXPRESSION */) {
          return 0 /* NOT_CONSTANT */;
        }
        const valueType = getConstantType(value, context);
        if (valueType === 0 /* NOT_CONSTANT */) {
          return valueType;
        }
        if (valueType < returnType) {
          returnType = valueType;
        }
      }
    }
    return returnType;
  }
  function getNodeProps(node) {
    const codegenNode = node.codegenNode;
    if (codegenNode.type === 13 /* VNODE_CALL */) {
      return codegenNode.props;
    }
  }
  function getPatchFlag(node) {
    const flag = node.patchFlag;
    return flag ? parseInt(flag, 10) : undefined;
  }

  function createTransformContext(root, { filename = '', prefixIdentifiers = false, hoistStatic = false, cacheHandlers = false, nodeTransforms = [], directiveTransforms = {}, transformHoist = null, isBuiltInComponent = NOOP, isCustomElement = NOOP, expressionPlugins = [], scopeId = null, slotted = true, ssr = false, ssrCssVars = ``, bindingMetadata = EMPTY_OBJ, inline = false, isTS = false, onError = defaultOnError }) {
    const nameMatch = filename.replace(/\?.*$/, '').match(/([^/\\]+)\.\w+$/);
    const context = {
      // options
      selfName: nameMatch && capitalize(camelize(nameMatch[1])),
      prefixIdentifiers,
      hoistStatic,
      cacheHandlers,
      nodeTransforms,
      directiveTransforms,
      transformHoist,
      isBuiltInComponent,
      isCustomElement,
      expressionPlugins,
      scopeId,
      slotted,
      ssr,
      ssrCssVars,
      bindingMetadata,
      inline,
      isTS,
      onError,
      // state
      root,
      helpers: new Map(),
      components: new Set(),
      directives: new Set(),
      hoists: [],
      imports: [],
      constantCache: new Map(),
      temps: 0,
      cached: 0,
      identifiers: Object.create(null),
      scopes: {
        vFor: 0,
        vSlot: 0,
        vPre: 0,
        vOnce: 0
      },
      parent: null,
      currentNode: root,
      childIndex: 0,
      // methods
      helper(name) {
        const count = context.helpers.get(name) || 0;
        context.helpers.set(name, count + 1);
        return name;
      },
      removeHelper(name) {
        const count = context.helpers.get(name);
        if (count) {
          const currentCount = count - 1;
          if (!currentCount) {
            context.helpers.delete(name);
          }
          else {
            context.helpers.set(name, currentCount);
          }
        }
      },
      helperString(name) {
        return `_${helperNameMap[context.helper(name)]}`;
      },
      replaceNode(node) {
        /* istanbul ignore if */
        {
          if (!context.currentNode) {
            throw new Error(`Node being replaced is already removed.`);
          }
          if (!context.parent) {
            throw new Error(`Cannot replace root node.`);
          }
        }
        context.parent.children[context.childIndex] = context.currentNode = node;
      },
      removeNode(node) {
        if (!context.parent) {
          throw new Error(`Cannot remove root node.`);
        }
        const list = context.parent.children;
        const removalIndex = node
          ? list.indexOf(node)
          : context.currentNode
            ? context.childIndex
            : -1;
        /* istanbul ignore if */
        if (removalIndex < 0) {
          throw new Error(`node being removed is not a child of current parent`);
        }
        if (!node || node === context.currentNode) {
          // current node removed
          context.currentNode = null;
          context.onNodeRemoved();
        }
        else {
          // sibling node removed
          if (context.childIndex > removalIndex) {
            context.childIndex--;
            context.onNodeRemoved();
          }
        }
        context.parent.children.splice(removalIndex, 1);
      },
      onNodeRemoved: () => { },
      addIdentifiers(exp) {
      },
      removeIdentifiers(exp) {
      },
      hoist(exp) {
        context.hoists.push(exp);
        const identifier = createSimpleExpression(`_hoisted_${context.hoists.length}`, false, exp.loc, 2 /* CAN_HOIST */);
        identifier.hoisted = exp;
        return identifier;
      },
      cache(exp, isVNode = false) {
        return createCacheExpression(++context.cached, exp, isVNode);
      }
    };
    return context;
  }
  function transform(root, options) {
    const context = createTransformContext(root, options);
    traverseNode(root, context);
    if (options.hoistStatic) {
      hoistStatic(root, context);
    }
    if (!options.ssr) {
      createRootCodegen(root, context);
    }
    // finalize meta information
    root.helpers = [...context.helpers.keys()];
    root.components = [...context.components];
    root.directives = [...context.directives];
    root.imports = context.imports;
    root.hoists = context.hoists;
    root.temps = context.temps;
    root.cached = context.cached;
  }
  function createRootCodegen(root, context) {
    const { helper, removeHelper } = context;
    const { children } = root;
    if (children.length === 1) {
      const child = children[0];
      // if the single child is an element, turn it into a block.
      if (isSingleElementRoot(root, child) && child.codegenNode) {
        // single element root is never hoisted so codegenNode will never be
        // SimpleExpressionNode
        const codegenNode = child.codegenNode;
        if (codegenNode.type === 13 /* VNODE_CALL */) {
          if (!codegenNode.isBlock) {
            removeHelper(CREATE_VNODE);
            codegenNode.isBlock = true;
            helper(OPEN_BLOCK);
            helper(CREATE_BLOCK);
          }
        }
        root.codegenNode = codegenNode;
      }
      else {
        // - single <slot/>, IfNode, ForNode: already blocks.
        // - single text node: always patched.
        // root codegen falls through via genNode()
        root.codegenNode = child;
      }
    }
    else if (children.length > 1) {
      // root has multiple nodes - return a fragment block.
      let patchFlag = 64 /* STABLE_FRAGMENT */;
      let patchFlagText = PatchFlagNames[64 /* STABLE_FRAGMENT */];
      // check if the fragment actually contains a single valid child with
      // the rest being comments
      if (children.filter(c => c.type !== 3 /* COMMENT */).length === 1) {
        patchFlag |= 2048 /* DEV_ROOT_FRAGMENT */;
        patchFlagText += `, ${PatchFlagNames[2048 /* DEV_ROOT_FRAGMENT */]}`;
      }
      root.codegenNode = createVNodeCall(context, helper(FRAGMENT), undefined, root.children, patchFlag + (` /* ${patchFlagText} */` ), undefined, undefined, true);
    }
    else ;
  }
  function traverseChildren(parent, context) {
    let i = 0;
    const nodeRemoved = () => {
      i--;
    };
    for (; i < parent.children.length; i++) {
      const child = parent.children[i];
      if (isString(child))
        continue;
      context.parent = parent;
      context.childIndex = i;
      context.onNodeRemoved = nodeRemoved;
      traverseNode(child, context);
    }
  }
  function traverseNode(node, context) {
    context.currentNode = node;
    // apply transform plugins
    const { nodeTransforms } = context;
    const exitFns = [];
    for (let i = 0; i < nodeTransforms.length; i++) {
      const onExit = nodeTransforms[i](node, context);
      if (onExit) {
        if (isArray(onExit)) {
          exitFns.push(...onExit);
        }
        else {
          exitFns.push(onExit);
        }
      }
      if (!context.currentNode) {
        // node was removed
        return;
      }
      else {
        // node may have been replaced
        node = context.currentNode;
      }
    }
    switch (node.type) {
      case 3 /* COMMENT */:
        if (!context.ssr) {
          // inject import for the Comment symbol, which is needed for creating
          // comment nodes with `createVNode`
          context.helper(CREATE_COMMENT);
        }
        break;
      case 5 /* INTERPOLATION */:
        // no need to traverse, but we need to inject toString helper
        if (!context.ssr) {
          context.helper(TO_DISPLAY_STRING);
        }
        break;
      // for container types, further traverse downwards
      case 9 /* IF */:
        for (let i = 0; i < node.branches.length; i++) {
          traverseNode(node.branches[i], context);
        }
        break;
      case 10 /* IF_BRANCH */:
      case 11 /* FOR */:
      case 1 /* ELEMENT */:
      case 0 /* ROOT */:
        traverseChildren(node, context);
        break;
    }
    // exit transforms
    context.currentNode = node;
    let i = exitFns.length;
    while (i--) {
      exitFns[i]();
    }
  }
  function createStructuralDirectiveTransform(name, fn) {
    const matches = isString(name)
      ? (n) => n === name
      : (n) => name.test(n);
    return (node, context) => {
      if (node.type === 1 /* ELEMENT */) {
        const { props } = node;
        // structural directive transforms are not concerned with slots
        // as they are handled separately in vSlot.ts
        if (node.tagType === 3 /* TEMPLATE */ && props.some(isVSlot)) {
          return;
        }
        const exitFns = [];
        for (let i = 0; i < props.length; i++) {
          const prop = props[i];
          if (prop.type === 7 /* DIRECTIVE */ && matches(prop.name)) {
            // structural directives are removed to avoid infinite recursion
            // also we remove them *before* applying so that it can further
            // traverse itself in case it moves the node around
            props.splice(i, 1);
            i--;
            const onExit = fn(node, prop, context);
            if (onExit)
              exitFns.push(onExit);
          }
        }
        return exitFns;
      }
    };
  }

  const PURE_ANNOTATION = `/*#__PURE__*/`;
  function createCodegenContext(ast, { mode = 'function', prefixIdentifiers = mode === 'module', sourceMap = false, filename = `template.vue.html`, scopeId = null, optimizeImports = false, runtimeGlobalName = `Vue`, runtimeModuleName = `vue`, ssr = false }) {
    const context = {
      mode,
      prefixIdentifiers,
      sourceMap,
      filename,
      scopeId,
      optimizeImports,
      runtimeGlobalName,
      runtimeModuleName,
      ssr,
      source: ast.loc.source,
      code: ``,
      column: 1,
      line: 1,
      offset: 0,
      indentLevel: 0,
      pure: false,
      map: undefined,
      helper(key) {
        return `_${helperNameMap[key]}`;
      },
      push(code, node) {
        context.code += code;
      },
      indent() {
        newline(++context.indentLevel);
      },
      deindent(withoutNewLine = false) {
        if (withoutNewLine) {
          --context.indentLevel;
        }
        else {
          newline(--context.indentLevel);
        }
      },
      newline() {
        newline(context.indentLevel);
      }
    };
    function newline(n) {
      context.push('\n' + `  `.repeat(n));
    }
    return context;
  }
  function generate(ast, options = {}) {
    const context = createCodegenContext(ast, options);
    if (options.onContextCreated)
      options.onContextCreated(context);
    const { mode, push, prefixIdentifiers, indent, deindent, newline, scopeId, ssr } = context;
    const hasHelpers = ast.helpers.length > 0;
    const useWithBlock = !prefixIdentifiers && mode !== 'module';
    // preambles
    // in setup() inline mode, the preamble is generated in a sub context
    // and returned separately.
    const preambleContext = context;
    {
      genFunctionPreamble(ast, preambleContext);
    }
    // enter render function
    const functionName = ssr ? `ssrRender` : `render`;
    const args = ssr ? ['_ctx', '_push', '_parent', '_attrs'] : ['_ctx', '_cache'];
    const signature = args.join(', ');
    {
      push(`function ${functionName}(${signature}) {`);
    }
    indent();
    if (useWithBlock) {
      push(`with (_ctx) {`);
      indent();
      // function mode const declarations should be inside with block
      // also they should be renamed to avoid collision with user properties
      if (hasHelpers) {
        push(`const { ${ast.helpers
          .map(s => `${helperNameMap[s]}: _${helperNameMap[s]}`)
          .join(', ')} } = _Vue`);
        push(`\n`);
        newline();
      }
    }
    // generate asset resolution statements
    if (ast.components.length) {
      genAssets(ast.components, 'component', context);
      if (ast.directives.length || ast.temps > 0) {
        newline();
      }
    }
    if (ast.directives.length) {
      genAssets(ast.directives, 'directive', context);
      if (ast.temps > 0) {
        newline();
      }
    }
    if (ast.temps > 0) {
      push(`let `);
      for (let i = 0; i < ast.temps; i++) {
        push(`${i > 0 ? `, ` : ``}_temp${i}`);
      }
    }
    if (ast.components.length || ast.directives.length || ast.temps) {
      push(`\n`);
      newline();
    }
    // generate the VNode tree expression
    if (!ssr) {
      push(`return `);
    }
    if (ast.codegenNode) {
      genNode(ast.codegenNode, context);
    }
    else {
      push(`null`);
    }
    if (useWithBlock) {
      deindent();
      push(`}`);
    }
    deindent();
    push(`}`);
    return {
      ast,
      code: context.code,
      preamble: ``,
      // SourceMapGenerator does have toJSON() method but it's not in the types
      map: context.map ? context.map.toJSON() : undefined
    };
  }
  function genFunctionPreamble(ast, context) {
    const { ssr, prefixIdentifiers, push, newline, runtimeModuleName, runtimeGlobalName } = context;
    const VueBinding = runtimeGlobalName;
    const aliasHelper = (s) => `${helperNameMap[s]}: _${helperNameMap[s]}`;
    // Generate const declaration for helpers
    // In prefix mode, we place the const declaration at top so it's done
    // only once; But if we not prefixing, we place the declaration inside the
    // with block so it doesn't incur the `in` check cost for every helper access.
    if (ast.helpers.length > 0) {
      {
        // "with" mode.
        // save Vue in a separate variable to avoid collision
        push(`const _Vue = ${VueBinding}\n`);
        // in "with" mode, helpers are declared inside the with block to avoid
        // has check cost, but hoists are lifted out of the function - we need
        // to provide the helper here.
        if (ast.hoists.length) {
          const staticHelpers = [
            CREATE_VNODE,
            CREATE_COMMENT,
            CREATE_TEXT,
            CREATE_STATIC
          ]
            .filter(helper => ast.helpers.includes(helper))
            .map(aliasHelper)
            .join(', ');
          push(`const { ${staticHelpers} } = _Vue\n`);
        }
      }
    }
    genHoists(ast.hoists, context);
    newline();
    push(`return `);
  }
  function genAssets(assets, type, { helper, push, newline }) {
    const resolver = helper(type === 'component' ? RESOLVE_COMPONENT : RESOLVE_DIRECTIVE);
    for (let i = 0; i < assets.length; i++) {
      let id = assets[i];
      // potential component implicit self-reference inferred from SFC filename
      const maybeSelfReference = id.endsWith('__self');
      if (maybeSelfReference) {
        id = id.slice(0, -6);
      }
      push(`const ${toValidAssetId(id, type)} = ${resolver}(${JSON.stringify(id)}${maybeSelfReference ? `, true` : ``})`);
      if (i < assets.length - 1) {
        newline();
      }
    }
  }
  function genHoists(hoists, context) {
    if (!hoists.length) {
      return;
    }
    context.pure = true;
    const { push, newline, helper, scopeId, mode } = context;
    newline();
    hoists.forEach((exp, i) => {
      if (exp) {
        push(`const _hoisted_${i + 1} = `);
        genNode(exp, context);
        newline();
      }
    });
    context.pure = false;
  }
  function isText$1(n) {
    return (isString(n) ||
      n.type === 4 /* SIMPLE_EXPRESSION */ ||
      n.type === 2 /* TEXT */ ||
      n.type === 5 /* INTERPOLATION */ ||
      n.type === 8 /* COMPOUND_EXPRESSION */);
  }
  function genNodeListAsArray(nodes, context) {
    const multilines = nodes.length > 3 ||
      (nodes.some(n => isArray(n) || !isText$1(n)));
    context.push(`[`);
    multilines && context.indent();
    genNodeList(nodes, context, multilines);
    multilines && context.deindent();
    context.push(`]`);
  }
  function genNodeList(nodes, context, multilines = false, comma = true) {
    const { push, newline } = context;
    for (let i = 0; i < nodes.length; i++) {
      const node = nodes[i];
      if (isString(node)) {
        push(node);
      }
      else if (isArray(node)) {
        genNodeListAsArray(node, context);
      }
      else {
        genNode(node, context);
      }
      if (i < nodes.length - 1) {
        if (multilines) {
          comma && push(',');
          newline();
        }
        else {
          comma && push(', ');
        }
      }
    }
  }
  function genNode(node, context) {
    if (isString(node)) {
      context.push(node);
      return;
    }
    if (isSymbol(node)) {
      context.push(context.helper(node));
      return;
    }
    switch (node.type) {
      case 1 /* ELEMENT */:
      case 9 /* IF */:
      case 11 /* FOR */:
        assert(node.codegenNode != null, `Codegen node is missing for element/if/for node. ` +
          `Apply appropriate transforms first.`);
        genNode(node.codegenNode, context);
        break;
      case 2 /* TEXT */:
        genText(node, context);
        break;
      case 4 /* SIMPLE_EXPRESSION */:
        genExpression(node, context);
        break;
      case 5 /* INTERPOLATION */:
        genInterpolation(node, context);
        break;
      case 12 /* TEXT_CALL */:
        genNode(node.codegenNode, context);
        break;
      case 8 /* COMPOUND_EXPRESSION */:
        genCompoundExpression(node, context);
        break;
      case 3 /* COMMENT */:
        genComment(node, context);
        break;
      case 13 /* VNODE_CALL */:
        genVNodeCall(node, context);
        break;
      case 14 /* JS_CALL_EXPRESSION */:
        genCallExpression(node, context);
        break;
      case 15 /* JS_OBJECT_EXPRESSION */:
        genObjectExpression(node, context);
        break;
      case 17 /* JS_ARRAY_EXPRESSION */:
        genArrayExpression(node, context);
        break;
      case 18 /* JS_FUNCTION_EXPRESSION */:
        genFunctionExpression(node, context);
        break;
      case 19 /* JS_CONDITIONAL_EXPRESSION */:
        genConditionalExpression(node, context);
        break;
      case 20 /* JS_CACHE_EXPRESSION */:
        genCacheExpression(node, context);
        break;
      // SSR only types
      case 21 /* JS_BLOCK_STATEMENT */:
        break;
      case 22 /* JS_TEMPLATE_LITERAL */:
        break;
      case 23 /* JS_IF_STATEMENT */:
        break;
      case 24 /* JS_ASSIGNMENT_EXPRESSION */:
        break;
      case 25 /* JS_SEQUENCE_EXPRESSION */:
        break;
      case 26 /* JS_RETURN_STATEMENT */:
        break;
      /* istanbul ignore next */
      case 10 /* IF_BRANCH */:
        // noop
        break;
      default:
      {
        assert(false, `unhandled codegen node type: ${node.type}`);
        // make sure we exhaust all possible types
        const exhaustiveCheck = node;
        return exhaustiveCheck;
      }
    }
  }
  function genText(node, context) {
    context.push(JSON.stringify(node.content), node);
  }
  function genExpression(node, context) {
    const { content, isStatic } = node;
    context.push(isStatic ? JSON.stringify(content) : content, node);
  }
  function genInterpolation(node, context) {
    const { push, helper, pure } = context;
    if (pure)
      push(PURE_ANNOTATION);
    push(`${helper(TO_DISPLAY_STRING)}(`);
    genNode(node.content, context);
    push(`)`);
  }
  function genCompoundExpression(node, context) {
    for (let i = 0; i < node.children.length; i++) {
      const child = node.children[i];
      if (isString(child)) {
        context.push(child);
      }
      else {
        genNode(child, context);
      }
    }
  }
  function genExpressionAsPropertyKey(node, context) {
    const { push } = context;
    if (node.type === 8 /* COMPOUND_EXPRESSION */) {
      push(`[`);
      genCompoundExpression(node, context);
      push(`]`);
    }
    else if (node.isStatic) {
      // only quote keys if necessary
      const text = isSimpleIdentifier(node.content)
        ? node.content
        : JSON.stringify(node.content);
      push(text, node);
    }
    else {
      push(`[${node.content}]`, node);
    }
  }
  function genComment(node, context) {
    {
      const { push, helper, pure } = context;
      if (pure) {
        push(PURE_ANNOTATION);
      }
      push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);
    }
  }
  function genVNodeCall(node, context) {
    const { push, helper, pure } = context;
    const { tag, props, children, patchFlag, dynamicProps, directives, isBlock, disableTracking } = node;
    if (directives) {
      push(helper(WITH_DIRECTIVES) + `(`);
    }
    if (isBlock) {
      push(`(${helper(OPEN_BLOCK)}(${disableTracking ? `true` : ``}), `);
    }
    if (pure) {
      push(PURE_ANNOTATION);
    }
    push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node);
    genNodeList(genNullableArgs([tag, props, children, patchFlag, dynamicProps]), context);
    push(`)`);
    if (isBlock) {
      push(`)`);
    }
    if (directives) {
      push(`, `);
      genNode(directives, context);
      push(`)`);
    }
  }
  function genNullableArgs(args) {
    let i = args.length;
    while (i--) {
      if (args[i] != null)
        break;
    }
    return args.slice(0, i + 1).map(arg => arg || `null`);
  }
  // JavaScript
  function genCallExpression(node, context) {
    const { push, helper, pure } = context;
    const callee = isString(node.callee) ? node.callee : helper(node.callee);
    if (pure) {
      push(PURE_ANNOTATION);
    }
    push(callee + `(`, node);
    genNodeList(node.arguments, context);
    push(`)`);
  }
  function genObjectExpression(node, context) {
    const { push, indent, deindent, newline } = context;
    const { properties } = node;
    if (!properties.length) {
      push(`{}`, node);
      return;
    }
    const multilines = properties.length > 1 ||
      (properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));
    push(multilines ? `{` : `{ `);
    multilines && indent();
    for (let i = 0; i < properties.length; i++) {
      const { key, value } = properties[i];
      // key
      genExpressionAsPropertyKey(key, context);
      push(`: `);
      // value
      genNode(value, context);
      if (i < properties.length - 1) {
        // will only reach this if it's multilines
        push(`,`);
        newline();
      }
    }
    multilines && deindent();
    push(multilines ? `}` : ` }`);
  }
  function genArrayExpression(node, context) {
    genNodeListAsArray(node.elements, context);
  }
  function genFunctionExpression(node, context) {
    const { push, indent, deindent, scopeId, mode } = context;
    const { params, returns, body, newline, isSlot } = node;
    if (isSlot) {
      // wrap slot functions with owner context
      push(`_${helperNameMap[WITH_CTX]}(`);
    }
    push(`(`, node);
    if (isArray(params)) {
      genNodeList(params, context);
    }
    else if (params) {
      genNode(params, context);
    }
    push(`) => `);
    if (newline || body) {
      push(`{`);
      indent();
    }
    if (returns) {
      if (newline) {
        push(`return `);
      }
      if (isArray(returns)) {
        genNodeListAsArray(returns, context);
      }
      else {
        genNode(returns, context);
      }
    }
    else if (body) {
      genNode(body, context);
    }
    if (newline || body) {
      deindent();
      push(`}`);
    }
    if (isSlot) {
      push(`)`);
    }
  }
  function genConditionalExpression(node, context) {
    const { test, consequent, alternate, newline: needNewline } = node;
    const { push, indent, deindent, newline } = context;
    if (test.type === 4 /* SIMPLE_EXPRESSION */) {
      const needsParens = !isSimpleIdentifier(test.content);
      needsParens && push(`(`);
      genExpression(test, context);
      needsParens && push(`)`);
    }
    else {
      push(`(`);
      genNode(test, context);
      push(`)`);
    }
    needNewline && indent();
    context.indentLevel++;
    needNewline || push(` `);
    push(`? `);
    genNode(consequent, context);
    context.indentLevel--;
    needNewline && newline();
    needNewline || push(` `);
    push(`: `);
    const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;
    if (!isNested) {
      context.indentLevel++;
    }
    genNode(alternate, context);
    if (!isNested) {
      context.indentLevel--;
    }
    needNewline && deindent(true /* without newline */);
  }
  function genCacheExpression(node, context) {
    const { push, helper, indent, deindent, newline } = context;
    push(`_cache[${node.index}] || (`);
    if (node.isVNode) {
      indent();
      push(`${helper(SET_BLOCK_TRACKING)}(-1),`);
      newline();
    }
    push(`_cache[${node.index}] = `);
    genNode(node.value, context);
    if (node.isVNode) {
      push(`,`);
      newline();
      push(`${helper(SET_BLOCK_TRACKING)}(1),`);
      newline();
      push(`_cache[${node.index}]`);
      deindent();
    }
    push(`)`);
  }

  // these keywords should not appear inside expressions, but operators like
  // typeof, instanceof and in are allowed
  const prohibitedKeywordRE = new RegExp('\\b' +
    ('do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
      'super,throw,while,yield,delete,export,import,return,switch,default,' +
      'extends,finally,continue,debugger,function,arguments,typeof,void')
      .split(',')
      .join('\\b|\\b') +
    '\\b');
  // strip strings in expressions
  const stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
  /**
   * Validate a non-prefixed expression.
   * This is only called when using the in-browser runtime compiler since it
   * doesn't prefix expressions.
   */
  function validateBrowserExpression(node, context, asParams = false, asRawStatements = false) {
    const exp = node.content;
    // empty expressions are validated per-directive since some directives
    // do allow empty expressions.
    if (!exp.trim()) {
      return;
    }
    try {
      new Function(asRawStatements
        ? ` ${exp} `
        : `return ${asParams ? `(${exp}) => {}` : `(${exp})`}`);
    }
    catch (e) {
      let message = e.message;
      const keywordMatch = exp
        .replace(stripStringRE, '')
        .match(prohibitedKeywordRE);
      if (keywordMatch) {
        message = `avoid using JavaScript keyword as property name: "${keywordMatch[0]}"`;
      }
      context.onError(createCompilerError(43 /* X_INVALID_EXPRESSION */, node.loc, undefined, message));
    }
  }

  const transformExpression = (node, context) => {
    if (node.type === 5 /* INTERPOLATION */) {
      node.content = processExpression(node.content, context);
    }
    else if (node.type === 1 /* ELEMENT */) {
      // handle directives on element
      for (let i = 0; i < node.props.length; i++) {
        const dir = node.props[i];
        // do not process for v-on & v-for since they are special handled
        if (dir.type === 7 /* DIRECTIVE */ && dir.name !== 'for') {
          const exp = dir.exp;
          const arg = dir.arg;
          // do not process exp if this is v-on:arg - we need special handling
          // for wrapping inline statements.
          if (exp &&
            exp.type === 4 /* SIMPLE_EXPRESSION */ &&
            !(dir.name === 'on' && arg)) {
            dir.exp = processExpression(exp, context,
              // slot args must be processed as function params
              dir.name === 'slot');
          }
          if (arg && arg.type === 4 /* SIMPLE_EXPRESSION */ && !arg.isStatic) {
            dir.arg = processExpression(arg, context);
          }
        }
      }
    }
  };
  // Important: since this function uses Node.js only dependencies, it should
  // always be used with a leading !true check so that it can be
  // tree-shaken from the browser build.
  function processExpression(node, context,
                             // some expressions like v-slot props & v-for aliases should be parsed as
                             // function params
                             asParams = false,
                             // v-on handler values may contain multiple statements
                             asRawStatements = false) {
    {
      {
        // simple in-browser validation (same logic in 2.x)
        validateBrowserExpression(node, context, asParams, asRawStatements);
      }
      return node;
    }
  }

  const transformIf = createStructuralDirectiveTransform(/^(if|else|else-if)$/, (node, dir, context) => {
    return processIf(node, dir, context, (ifNode, branch, isRoot) => {
      // #1587: We need to dynamically increment the key based on the current
      // node's sibling nodes, since chained v-if/else branches are
      // rendered at the same depth
      const siblings = context.parent.children;
      let i = siblings.indexOf(ifNode);
      let key = 0;
      while (i-- >= 0) {
        const sibling = siblings[i];
        if (sibling && sibling.type === 9 /* IF */) {
          key += sibling.branches.length;
        }
      }
      // Exit callback. Complete the codegenNode when all children have been
      // transformed.
      return () => {
        if (isRoot) {
          ifNode.codegenNode = createCodegenNodeForBranch(branch, key, context);
        }
        else {
          // attach this branch's codegen node to the v-if root.
          const parentCondition = getParentCondition(ifNode.codegenNode);
          parentCondition.alternate = createCodegenNodeForBranch(branch, key + ifNode.branches.length - 1, context);
        }
      };
    });
  });
  // target-agnostic transform used for both Client and SSR
  function processIf(node, dir, context, processCodegen) {
    if (dir.name !== 'else' &&
      (!dir.exp || !dir.exp.content.trim())) {
      const loc = dir.exp ? dir.exp.loc : node.loc;
      context.onError(createCompilerError(27 /* X_V_IF_NO_EXPRESSION */, dir.loc));
      dir.exp = createSimpleExpression(`true`, false, loc);
    }
    if (dir.exp) {
      validateBrowserExpression(dir.exp, context);
    }
    if (dir.name === 'if') {
      const branch = createIfBranch(node, dir);
      const ifNode = {
        type: 9 /* IF */,
        loc: node.loc,
        branches: [branch]
      };
      context.replaceNode(ifNode);
      if (processCodegen) {
        return processCodegen(ifNode, branch, true);
      }
    }
    else {
      // locate the adjacent v-if
      const siblings = context.parent.children;
      const comments = [];
      let i = siblings.indexOf(node);
      while (i-- >= -1) {
        const sibling = siblings[i];
        if (sibling && sibling.type === 3 /* COMMENT */) {
          context.removeNode(sibling);
          comments.unshift(sibling);
          continue;
        }
        if (sibling &&
          sibling.type === 2 /* TEXT */ &&
          !sibling.content.trim().length) {
          context.removeNode(sibling);
          continue;
        }
        if (sibling && sibling.type === 9 /* IF */) {
          // move the node to the if node's branches
          context.removeNode();
          const branch = createIfBranch(node, dir);
          if (comments.length) {
            branch.children = [...comments, ...branch.children];
          }
          // check if user is forcing same key on different branches
          {
            const key = branch.userKey;
            if (key) {
              sibling.branches.forEach(({ userKey }) => {
                if (isSameKey(userKey, key)) {
                  context.onError(createCompilerError(28 /* X_V_IF_SAME_KEY */, branch.userKey.loc));
                }
              });
            }
          }
          sibling.branches.push(branch);
          const onExit = processCodegen && processCodegen(sibling, branch, false);
          // since the branch was removed, it will not be traversed.
          // make sure to traverse here.
          traverseNode(branch, context);
          // call on exit
          if (onExit)
            onExit();
          // make sure to reset currentNode after traversal to indicate this
          // node has been removed.
          context.currentNode = null;
        }
        else {
          context.onError(createCompilerError(29 /* X_V_ELSE_NO_ADJACENT_IF */, node.loc));
        }
        break;
      }
    }
  }
  function createIfBranch(node, dir) {
    return {
      type: 10 /* IF_BRANCH */,
      loc: node.loc,
      condition: dir.name === 'else' ? undefined : dir.exp,
      children: node.tagType === 3 /* TEMPLATE */ && !findDir(node, 'for')
        ? node.children
        : [node],
      userKey: findProp(node, `key`)
    };
  }
  function createCodegenNodeForBranch(branch, keyIndex, context) {
    if (branch.condition) {
      return createConditionalExpression(branch.condition, createChildrenCodegenNode(branch, keyIndex, context),
        // make sure to pass in asBlock: true so that the comment node call
        // closes the current block.
        createCallExpression(context.helper(CREATE_COMMENT), [
          '"v-if"' ,
          'true'
        ]));
    }
    else {
      return createChildrenCodegenNode(branch, keyIndex, context);
    }
  }
  function createChildrenCodegenNode(branch, keyIndex, context) {
    const { helper, removeHelper } = context;
    const keyProperty = createObjectProperty(`key`, createSimpleExpression(`${keyIndex}`, false, locStub, 2 /* CAN_HOIST */));
    const { children } = branch;
    const firstChild = children[0];
    const needFragmentWrapper = children.length !== 1 || firstChild.type !== 1 /* ELEMENT */;
    if (needFragmentWrapper) {
      if (children.length === 1 && firstChild.type === 11 /* FOR */) {
        // optimize away nested fragments when child is a ForNode
        const vnodeCall = firstChild.codegenNode;
        injectProp(vnodeCall, keyProperty, context);
        return vnodeCall;
      }
      else {
        let patchFlag = 64 /* STABLE_FRAGMENT */;
        let patchFlagText = PatchFlagNames[64 /* STABLE_FRAGMENT */];
        // check if the fragment actually contains a single valid child with
        // the rest being comments
        if (children.filter(c => c.type !== 3 /* COMMENT */).length === 1) {
          patchFlag |= 2048 /* DEV_ROOT_FRAGMENT */;
          patchFlagText += `, ${PatchFlagNames[2048 /* DEV_ROOT_FRAGMENT */]}`;
        }
        return createVNodeCall(context, helper(FRAGMENT), createObjectExpression([keyProperty]), children, patchFlag + (` /* ${patchFlagText} */` ), undefined, undefined, true, false, branch.loc);
      }
    }
    else {
      const vnodeCall = firstChild
        .codegenNode;
      // Change createVNode to createBlock.
      if (vnodeCall.type === 13 /* VNODE_CALL */ && !vnodeCall.isBlock) {
        removeHelper(CREATE_VNODE);
        vnodeCall.isBlock = true;
        helper(OPEN_BLOCK);
        helper(CREATE_BLOCK);
      }
      // inject branch key
      injectProp(vnodeCall, keyProperty, context);
      return vnodeCall;
    }
  }
  function isSameKey(a, b) {
    if (!a || a.type !== b.type) {
      return false;
    }
    if (a.type === 6 /* ATTRIBUTE */) {
      if (a.value.content !== b.value.content) {
        return false;
      }
    }
    else {
      // directive
      const exp = a.exp;
      const branchExp = b.exp;
      if (exp.type !== branchExp.type) {
        return false;
      }
      if (exp.type !== 4 /* SIMPLE_EXPRESSION */ ||
        (exp.isStatic !== branchExp.isStatic ||
          exp.content !== branchExp.content)) {
        return false;
      }
    }
    return true;
  }
  function getParentCondition(node) {
    while (true) {
      if (node.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
        if (node.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
          node = node.alternate;
        }
        else {
          return node;
        }
      }
      else if (node.type === 20 /* JS_CACHE_EXPRESSION */) {
        node = node.value;
      }
    }
  }

  const transformFor = createStructuralDirectiveTransform('for', (node, dir, context) => {
    const { helper, removeHelper } = context;
    return processFor(node, dir, context, forNode => {
      // create the loop render function expression now, and add the
      // iterator on exit after all children have been traversed
      const renderExp = createCallExpression(helper(RENDER_LIST), [
        forNode.source
      ]);
      const keyProp = findProp(node, `key`);
      const keyProperty = keyProp
        ? createObjectProperty(`key`, keyProp.type === 6 /* ATTRIBUTE */
          ? createSimpleExpression(keyProp.value.content, true)
          : keyProp.exp)
        : null;
      const isStableFragment = forNode.source.type === 4 /* SIMPLE_EXPRESSION */ &&
        forNode.source.constType > 0 /* NOT_CONSTANT */;
      const fragmentFlag = isStableFragment
        ? 64 /* STABLE_FRAGMENT */
        : keyProp
          ? 128 /* KEYED_FRAGMENT */
          : 256 /* UNKEYED_FRAGMENT */;
      forNode.codegenNode = createVNodeCall(context, helper(FRAGMENT), undefined, renderExp, fragmentFlag +
        (` /* ${PatchFlagNames[fragmentFlag]} */` ), undefined, undefined, true /* isBlock */, !isStableFragment /* disableTracking */, node.loc);
      return () => {
        // finish the codegen now that all children have been traversed
        let childBlock;
        const isTemplate = isTemplateNode(node);
        const { children } = forNode;
        // check <template v-for> key placement
        if (isTemplate) {
          node.children.some(c => {
            if (c.type === 1 /* ELEMENT */) {
              const key = findProp(c, 'key');
              if (key) {
                context.onError(createCompilerError(32 /* X_V_FOR_TEMPLATE_KEY_PLACEMENT */, key.loc));
                return true;
              }
            }
          });
        }
        const needFragmentWrapper = children.length !== 1 || children[0].type !== 1 /* ELEMENT */;
        const slotOutlet = isSlotOutlet(node)
          ? node
          : isTemplate &&
          node.children.length === 1 &&
          isSlotOutlet(node.children[0])
            ? node.children[0] // api-extractor somehow fails to infer this
            : null;
        if (slotOutlet) {
          // <slot v-for="..."> or <template v-for="..."><slot/></template>
          childBlock = slotOutlet.codegenNode;
          if (isTemplate && keyProperty) {
            // <template v-for="..." :key="..."><slot/></template>
            // we need to inject the key to the renderSlot() call.
            // the props for renderSlot is passed as the 3rd argument.
            injectProp(childBlock, keyProperty, context);
          }
        }
        else if (needFragmentWrapper) {
          // <template v-for="..."> with text or multi-elements
          // should generate a fragment block for each loop
          childBlock = createVNodeCall(context, helper(FRAGMENT), keyProperty ? createObjectExpression([keyProperty]) : undefined, node.children, 64 /* STABLE_FRAGMENT */ +
            (` /* ${PatchFlagNames[64 /* STABLE_FRAGMENT */]} */`
            ), undefined, undefined, true);
        }
        else {
          // Normal element v-for. Directly use the child's codegenNode
          // but mark it as a block.
          childBlock = children[0]
            .codegenNode;
          if (isTemplate && keyProperty) {
            injectProp(childBlock, keyProperty, context);
          }
          if (childBlock.isBlock !== !isStableFragment) {
            if (childBlock.isBlock) {
              // switch from block to vnode
              removeHelper(OPEN_BLOCK);
              removeHelper(CREATE_BLOCK);
            }
            else {
              // switch from vnode to block
              removeHelper(CREATE_VNODE);
            }
          }
          childBlock.isBlock = !isStableFragment;
          if (childBlock.isBlock) {
            helper(OPEN_BLOCK);
            helper(CREATE_BLOCK);
          }
          else {
            helper(CREATE_VNODE);
          }
        }
        renderExp.arguments.push(createFunctionExpression(createForLoopParams(forNode.parseResult), childBlock, true /* force newline */));
      };
    });
  });
  // target-agnostic transform used for both Client and SSR
  function processFor(node, dir, context, processCodegen) {
    if (!dir.exp) {
      context.onError(createCompilerError(30 /* X_V_FOR_NO_EXPRESSION */, dir.loc));
      return;
    }
    const parseResult = parseForExpression(
      // can only be simple expression because vFor transform is applied
      // before expression transform.
      dir.exp, context);
    if (!parseResult) {
      context.onError(createCompilerError(31 /* X_V_FOR_MALFORMED_EXPRESSION */, dir.loc));
      return;
    }
    const { addIdentifiers, removeIdentifiers, scopes } = context;
    const { source, value, key, index } = parseResult;
    const forNode = {
      type: 11 /* FOR */,
      loc: dir.loc,
      source,
      valueAlias: value,
      keyAlias: key,
      objectIndexAlias: index,
      parseResult,
      children: isTemplateNode(node) ? node.children : [node]
    };
    context.replaceNode(forNode);
    // bookkeeping
    scopes.vFor++;
    const onExit = processCodegen && processCodegen(forNode);
    return () => {
      scopes.vFor--;
      if (onExit)
        onExit();
    };
  }
  const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
  // This regex doesn't cover the case if key or index aliases have destructuring,
  // but those do not make sense in the first place, so this works in practice.
  const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
  const stripParensRE = /^\(|\)$/g;
  function parseForExpression(input, context) {
    const loc = input.loc;
    const exp = input.content;
    const inMatch = exp.match(forAliasRE);
    if (!inMatch)
      return;
    const [, LHS, RHS] = inMatch;
    const result = {
      source: createAliasExpression(loc, RHS.trim(), exp.indexOf(RHS, LHS.length)),
      value: undefined,
      key: undefined,
      index: undefined
    };
    {
      validateBrowserExpression(result.source, context);
    }
    let valueContent = LHS.trim()
      .replace(stripParensRE, '')
      .trim();
    const trimmedOffset = LHS.indexOf(valueContent);
    const iteratorMatch = valueContent.match(forIteratorRE);
    if (iteratorMatch) {
      valueContent = valueContent.replace(forIteratorRE, '').trim();
      const keyContent = iteratorMatch[1].trim();
      let keyOffset;
      if (keyContent) {
        keyOffset = exp.indexOf(keyContent, trimmedOffset + valueContent.length);
        result.key = createAliasExpression(loc, keyContent, keyOffset);
        {
          validateBrowserExpression(result.key, context, true);
        }
      }
      if (iteratorMatch[2]) {
        const indexContent = iteratorMatch[2].trim();
        if (indexContent) {
          result.index = createAliasExpression(loc, indexContent, exp.indexOf(indexContent, result.key
            ? keyOffset + keyContent.length
            : trimmedOffset + valueContent.length));
          {
            validateBrowserExpression(result.index, context, true);
          }
        }
      }
    }
    if (valueContent) {
      result.value = createAliasExpression(loc, valueContent, trimmedOffset);
      {
        validateBrowserExpression(result.value, context, true);
      }
    }
    return result;
  }
  function createAliasExpression(range, content, offset) {
    return createSimpleExpression(content, false, getInnerRange(range, offset, content.length));
  }
  function createForLoopParams({ value, key, index }) {
    const params = [];
    if (value) {
      params.push(value);
    }
    if (key) {
      if (!value) {
        params.push(createSimpleExpression(`_`, false));
      }
      params.push(key);
    }
    if (index) {
      if (!key) {
        if (!value) {
          params.push(createSimpleExpression(`_`, false));
        }
        params.push(createSimpleExpression(`__`, false));
      }
      params.push(index);
    }
    return params;
  }

  const defaultFallback = createSimpleExpression(`undefined`, false);
  // A NodeTransform that:
  // 1. Tracks scope identifiers for scoped slots so that they don't get prefixed
  //    by transformExpression. This is only applied in non-browser builds with
  //    { prefixIdentifiers: true }.
  // 2. Track v-slot depths so that we know a slot is inside another slot.
  //    Note the exit callback is executed before buildSlots() on the same node,
  //    so only nested slots see positive numbers.
  const trackSlotScopes = (node, context) => {
    if (node.type === 1 /* ELEMENT */ &&
      (node.tagType === 1 /* COMPONENT */ ||
        node.tagType === 3 /* TEMPLATE */)) {
      // We are only checking non-empty v-slot here
      // since we only care about slots that introduce scope variables.
      const vSlot = findDir(node, 'slot');
      if (vSlot) {
        vSlot.exp;
        context.scopes.vSlot++;
        return () => {
          context.scopes.vSlot--;
        };
      }
    }
  };
  const buildClientSlotFn = (props, children, loc) => createFunctionExpression(props, children, false /* newline */, true /* isSlot */, children.length ? children[0].loc : loc);
  // Instead of being a DirectiveTransform, v-slot processing is called during
  // transformElement to build the slots object for a component.
  function buildSlots(node, context, buildSlotFn = buildClientSlotFn) {
    context.helper(WITH_CTX);
    const { children, loc } = node;
    const slotsProperties = [];
    const dynamicSlots = [];
    const buildDefaultSlotProperty = (props, children) => createObjectProperty(`default`, buildSlotFn(props, children, loc));
    // If the slot is inside a v-for or another v-slot, force it to be dynamic
    // since it likely uses a scope variable.
    let hasDynamicSlots = context.scopes.vSlot > 0 || context.scopes.vFor > 0;
    // 1. Check for slot with slotProps on component itself.
    //    <Comp v-slot="{ prop }"/>
    const onComponentSlot = findDir(node, 'slot', true);
    if (onComponentSlot) {
      const { arg, exp } = onComponentSlot;
      if (arg && !isStaticExp(arg)) {
        hasDynamicSlots = true;
      }
      slotsProperties.push(createObjectProperty(arg || createSimpleExpression('default', true), buildSlotFn(exp, children, loc)));
    }
    // 2. Iterate through children and check for template slots
    //    <template v-slot:foo="{ prop }">
    let hasTemplateSlots = false;
    let hasNamedDefaultSlot = false;
    const implicitDefaultChildren = [];
    const seenSlotNames = new Set();
    for (let i = 0; i < children.length; i++) {
      const slotElement = children[i];
      let slotDir;
      if (!isTemplateNode(slotElement) ||
        !(slotDir = findDir(slotElement, 'slot', true))) {
        // not a <template v-slot>, skip.
        if (slotElement.type !== 3 /* COMMENT */) {
          implicitDefaultChildren.push(slotElement);
        }
        continue;
      }
      if (onComponentSlot) {
        // already has on-component slot - this is incorrect usage.
        context.onError(createCompilerError(36 /* X_V_SLOT_MIXED_SLOT_USAGE */, slotDir.loc));
        break;
      }
      hasTemplateSlots = true;
      const { children: slotChildren, loc: slotLoc } = slotElement;
      const { arg: slotName = createSimpleExpression(`default`, true), exp: slotProps, loc: dirLoc } = slotDir;
      // check if name is dynamic.
      let staticSlotName;
      if (isStaticExp(slotName)) {
        staticSlotName = slotName ? slotName.content : `default`;
      }
      else {
        hasDynamicSlots = true;
      }
      const slotFunction = buildSlotFn(slotProps, slotChildren, slotLoc);
      // check if this slot is conditional (v-if/v-for)
      let vIf;
      let vElse;
      let vFor;
      if ((vIf = findDir(slotElement, 'if'))) {
        hasDynamicSlots = true;
        dynamicSlots.push(createConditionalExpression(vIf.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback));
      }
      else if ((vElse = findDir(slotElement, /^else(-if)?$/, true /* allowEmpty */))) {
        // find adjacent v-if
        let j = i;
        let prev;
        while (j--) {
          prev = children[j];
          if (prev.type !== 3 /* COMMENT */) {
            break;
          }
        }
        if (prev && isTemplateNode(prev) && findDir(prev, 'if')) {
          // remove node
          children.splice(i, 1);
          i--;
          // attach this slot to previous conditional
          let conditional = dynamicSlots[dynamicSlots.length - 1];
          while (conditional.alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */) {
            conditional = conditional.alternate;
          }
          conditional.alternate = vElse.exp
            ? createConditionalExpression(vElse.exp, buildDynamicSlot(slotName, slotFunction), defaultFallback)
            : buildDynamicSlot(slotName, slotFunction);
        }
        else {
          context.onError(createCompilerError(29 /* X_V_ELSE_NO_ADJACENT_IF */, vElse.loc));
        }
      }
      else if ((vFor = findDir(slotElement, 'for'))) {
        hasDynamicSlots = true;
        const parseResult = vFor.parseResult ||
          parseForExpression(vFor.exp, context);
        if (parseResult) {
          // Render the dynamic slots as an array and add it to the createSlot()
          // args. The runtime knows how to handle it appropriately.
          dynamicSlots.push(createCallExpression(context.helper(RENDER_LIST), [
            parseResult.source,
            createFunctionExpression(createForLoopParams(parseResult), buildDynamicSlot(slotName, slotFunction), true /* force newline */)
          ]));
        }
        else {
          context.onError(createCompilerError(31 /* X_V_FOR_MALFORMED_EXPRESSION */, vFor.loc));
        }
      }
      else {
        // check duplicate static names
        if (staticSlotName) {
          if (seenSlotNames.has(staticSlotName)) {
            context.onError(createCompilerError(37 /* X_V_SLOT_DUPLICATE_SLOT_NAMES */, dirLoc));
            continue;
          }
          seenSlotNames.add(staticSlotName);
          if (staticSlotName === 'default') {
            hasNamedDefaultSlot = true;
          }
        }
        slotsProperties.push(createObjectProperty(slotName, slotFunction));
      }
    }
    if (!onComponentSlot) {
      if (!hasTemplateSlots) {
        // implicit default slot (on component)
        slotsProperties.push(buildDefaultSlotProperty(undefined, children));
      }
      else if (implicitDefaultChildren.length) {
        // implicit default slot (mixed with named slots)
        if (hasNamedDefaultSlot) {
          context.onError(createCompilerError(38 /* X_V_SLOT_EXTRANEOUS_DEFAULT_SLOT_CHILDREN */, implicitDefaultChildren[0].loc));
        }
        else {
          slotsProperties.push(buildDefaultSlotProperty(undefined, implicitDefaultChildren));
        }
      }
    }
    const slotFlag = hasDynamicSlots
      ? 2 /* DYNAMIC */
      : hasForwardedSlots(node.children)
        ? 3 /* FORWARDED */
        : 1 /* STABLE */;
    let slots = createObjectExpression(slotsProperties.concat(createObjectProperty(`_`,
      // 2 = compiled but dynamic = can skip normalization, but must run diff
      // 1 = compiled and static = can skip normalization AND diff as optimized
      createSimpleExpression(slotFlag + (` /* ${slotFlagsText[slotFlag]} */` ), false))), loc);
    if (dynamicSlots.length) {
      slots = createCallExpression(context.helper(CREATE_SLOTS), [
        slots,
        createArrayExpression(dynamicSlots)
      ]);
    }
    return {
      slots,
      hasDynamicSlots
    };
  }
  function buildDynamicSlot(name, fn) {
    return createObjectExpression([
      createObjectProperty(`name`, name),
      createObjectProperty(`fn`, fn)
    ]);
  }
  function hasForwardedSlots(children) {
    for (let i = 0; i < children.length; i++) {
      const child = children[i];
      switch (child.type) {
        case 1 /* ELEMENT */:
          if (child.tagType === 2 /* SLOT */ ||
            (child.tagType === 0 /* ELEMENT */ &&
              hasForwardedSlots(child.children))) {
            return true;
          }
          break;
        case 9 /* IF */:
          if (hasForwardedSlots(child.branches))
            return true;
          break;
        case 10 /* IF_BRANCH */:
        case 11 /* FOR */:
          if (hasForwardedSlots(child.children))
            return true;
          break;
      }
    }
    return false;
  }

  // some directive transforms (e.g. v-model) may return a symbol for runtime
  // import, which should be used instead of a resolveDirective call.
  const directiveImportMap = new WeakMap();
  // generate a JavaScript AST for this element's codegen
  const transformElement = (node, context) => {
    // perform the work on exit, after all child expressions have been
    // processed and merged.
    return function postTransformElement() {
      node = context.currentNode;
      if (!(node.type === 1 /* ELEMENT */ &&
        (node.tagType === 0 /* ELEMENT */ ||
          node.tagType === 1 /* COMPONENT */))) {
        return;
      }
      const { tag, props } = node;
      const isComponent = node.tagType === 1 /* COMPONENT */;
      // The goal of the transform is to create a codegenNode implementing the
      // VNodeCall interface.
      const vnodeTag = isComponent
        ? resolveComponentType(node, context)
        : `"${tag}"`;
      const isDynamicComponent = isObject(vnodeTag) && vnodeTag.callee === RESOLVE_DYNAMIC_COMPONENT;
      let vnodeProps;
      let vnodeChildren;
      let vnodePatchFlag;
      let patchFlag = 0;
      let vnodeDynamicProps;
      let dynamicPropNames;
      let vnodeDirectives;
      let shouldUseBlock =
        // dynamic component may resolve to plain elements
        isDynamicComponent ||
        vnodeTag === TELEPORT ||
        vnodeTag === SUSPENSE ||
        (!isComponent &&
          // <svg> and <foreignObject> must be forced into blocks so that block
          // updates inside get proper isSVG flag at runtime. (#639, #643)
          // This is technically web-specific, but splitting the logic out of core
          // leads to too much unnecessary complexity.
          (tag === 'svg' ||
            tag === 'foreignObject' ||
            // #938: elements with dynamic keys should be forced into blocks
            findProp(node, 'key', true)));
      // props
      if (props.length > 0) {
        const propsBuildResult = buildProps(node, context);
        vnodeProps = propsBuildResult.props;
        patchFlag = propsBuildResult.patchFlag;
        dynamicPropNames = propsBuildResult.dynamicPropNames;
        const directives = propsBuildResult.directives;
        vnodeDirectives =
          directives && directives.length
            ? createArrayExpression(directives.map(dir => buildDirectiveArgs(dir, context)))
            : undefined;
      }
      // children
      if (node.children.length > 0) {
        if (vnodeTag === KEEP_ALIVE) {
          // Although a built-in component, we compile KeepAlive with raw children
          // instead of slot functions so that it can be used inside Transition
          // or other Transition-wrapping HOCs.
          // To ensure correct updates with block optimizations, we need to:
          // 1. Force keep-alive into a block. This avoids its children being
          //    collected by a parent block.
          shouldUseBlock = true;
          // 2. Force keep-alive to always be updated, since it uses raw children.
          patchFlag |= 1024 /* DYNAMIC_SLOTS */;
          if (node.children.length > 1) {
            context.onError(createCompilerError(44 /* X_KEEP_ALIVE_INVALID_CHILDREN */, {
              start: node.children[0].loc.start,
              end: node.children[node.children.length - 1].loc.end,
              source: ''
            }));
          }
        }
        const shouldBuildAsSlots = isComponent &&
          // Teleport is not a real component and has dedicated runtime handling
          vnodeTag !== TELEPORT &&
          // explained above.
          vnodeTag !== KEEP_ALIVE;
        if (shouldBuildAsSlots) {
          const { slots, hasDynamicSlots } = buildSlots(node, context);
          vnodeChildren = slots;
          if (hasDynamicSlots) {
            patchFlag |= 1024 /* DYNAMIC_SLOTS */;
          }
        }
        else if (node.children.length === 1 && vnodeTag !== TELEPORT) {
          const child = node.children[0];
          const type = child.type;
          // check for dynamic text children
          const hasDynamicTextChild = type === 5 /* INTERPOLATION */ ||
            type === 8 /* COMPOUND_EXPRESSION */;
          if (hasDynamicTextChild &&
            getConstantType(child, context) === 0 /* NOT_CONSTANT */) {
            patchFlag |= 1 /* TEXT */;
          }
          // pass directly if the only child is a text node
          // (plain / interpolation / expression)
          if (hasDynamicTextChild || type === 2 /* TEXT */) {
            vnodeChildren = child;
          }
          else {
            vnodeChildren = node.children;
          }
        }
        else {
          vnodeChildren = node.children;
        }
      }
      // patchFlag & dynamicPropNames
      if (patchFlag !== 0) {
        {
          if (patchFlag < 0) {
            // special flags (negative and mutually exclusive)
            vnodePatchFlag = patchFlag + ` /* ${PatchFlagNames[patchFlag]} */`;
          }
          else {
            // bitwise flags
            const flagNames = Object.keys(PatchFlagNames)
              .map(Number)
              .filter(n => n > 0 && patchFlag & n)
              .map(n => PatchFlagNames[n])
              .join(`, `);
            vnodePatchFlag = patchFlag + ` /* ${flagNames} */`;
          }
        }
        if (dynamicPropNames && dynamicPropNames.length) {
          vnodeDynamicProps = stringifyDynamicPropNames(dynamicPropNames);
        }
      }
      node.codegenNode = createVNodeCall(context, vnodeTag, vnodeProps, vnodeChildren, vnodePatchFlag, vnodeDynamicProps, vnodeDirectives, !!shouldUseBlock, false /* disableTracking */, node.loc);
    };
  };
  function resolveComponentType(node, context, ssr = false) {
    const { tag } = node;
    // 1. dynamic component
    const isProp = isComponentTag(tag)
      ? findProp(node, 'is')
      : findDir(node, 'is');
    if (isProp) {
      const exp = isProp.type === 6 /* ATTRIBUTE */
        ? isProp.value && createSimpleExpression(isProp.value.content, true)
        : isProp.exp;
      if (exp) {
        return createCallExpression(context.helper(RESOLVE_DYNAMIC_COMPONENT), [
          exp
        ]);
      }
    }
    // 2. built-in components (Teleport, Transition, KeepAlive, Suspense...)
    const builtIn = isCoreComponent(tag) || context.isBuiltInComponent(tag);
    if (builtIn) {
      // built-ins are simply fallthroughs / have special handling during ssr
      // so we don't need to import their runtime equivalents
      if (!ssr)
        context.helper(builtIn);
      return builtIn;
    }
    // 5. user component (resolve)
    context.helper(RESOLVE_COMPONENT);
    context.components.add(tag);
    return toValidAssetId(tag, `component`);
  }
  function buildProps(node, context, props = node.props, ssr = false) {
    const { tag, loc: elementLoc } = node;
    const isComponent = node.tagType === 1 /* COMPONENT */;
    let properties = [];
    const mergeArgs = [];
    const runtimeDirectives = [];
    // patchFlag analysis
    let patchFlag = 0;
    let hasRef = false;
    let hasClassBinding = false;
    let hasStyleBinding = false;
    let hasHydrationEventBinding = false;
    let hasDynamicKeys = false;
    let hasVnodeHook = false;
    const dynamicPropNames = [];
    const analyzePatchFlag = ({ key, value }) => {
      if (isStaticExp(key)) {
        const name = key.content;
        const isEventHandler = isOn(name);
        if (!isComponent &&
          isEventHandler &&
          // omit the flag for click handlers because hydration gives click
          // dedicated fast path.
          name.toLowerCase() !== 'onclick' &&
          // omit v-model handlers
          name !== 'onUpdate:modelValue' &&
          // omit onVnodeXXX hooks
          !isReservedProp(name)) {
          hasHydrationEventBinding = true;
        }
        if (isEventHandler && isReservedProp(name)) {
          hasVnodeHook = true;
        }
        if (value.type === 20 /* JS_CACHE_EXPRESSION */ ||
          ((value.type === 4 /* SIMPLE_EXPRESSION */ ||
            value.type === 8 /* COMPOUND_EXPRESSION */) &&
            getConstantType(value, context) > 0)) {
          // skip if the prop is a cached handler or has constant value
          return;
        }
        if (name === 'ref') {
          hasRef = true;
        }
        else if (name === 'class' && !isComponent) {
          hasClassBinding = true;
        }
        else if (name === 'style' && !isComponent) {
          hasStyleBinding = true;
        }
        else if (name !== 'key' && !dynamicPropNames.includes(name)) {
          dynamicPropNames.push(name);
        }
      }
      else {
        hasDynamicKeys = true;
      }
    };
    for (let i = 0; i < props.length; i++) {
      // static attribute
      const prop = props[i];
      if (prop.type === 6 /* ATTRIBUTE */) {
        const { loc, name, value } = prop;
        let isStatic = true;
        if (name === 'ref') {
          hasRef = true;
        }
        // skip :is on <component>
        if (name === 'is' && isComponentTag(tag)) {
          continue;
        }
        properties.push(createObjectProperty(createSimpleExpression(name, true, getInnerRange(loc, 0, name.length)), createSimpleExpression(value ? value.content : '', isStatic, value ? value.loc : loc)));
      }
      else {
        // directives
        const { name, arg, exp, loc } = prop;
        const isBind = name === 'bind';
        const isOn = name === 'on';
        // skip v-slot - it is handled by its dedicated transform.
        if (name === 'slot') {
          if (!isComponent) {
            context.onError(createCompilerError(39 /* X_V_SLOT_MISPLACED */, loc));
          }
          continue;
        }
        // skip v-once - it is handled by its dedicated transform.
        if (name === 'once') {
          continue;
        }
        // skip v-is and :is on <component>
        if (name === 'is' ||
          (isBind && isComponentTag(tag) && isBindKey(arg, 'is'))) {
          continue;
        }
        // skip v-on in SSR compilation
        if (isOn && ssr) {
          continue;
        }
        // special case for v-bind and v-on with no argument
        if (!arg && (isBind || isOn)) {
          hasDynamicKeys = true;
          if (exp) {
            if (properties.length) {
              mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
              properties = [];
            }
            if (isBind) {
              mergeArgs.push(exp);
            }
            else {
              // v-on="obj" -> toHandlers(obj)
              mergeArgs.push({
                type: 14 /* JS_CALL_EXPRESSION */,
                loc,
                callee: context.helper(TO_HANDLERS),
                arguments: [exp]
              });
            }
          }
          else {
            context.onError(createCompilerError(isBind
              ? 33 /* X_V_BIND_NO_EXPRESSION */
              : 34 /* X_V_ON_NO_EXPRESSION */, loc));
          }
          continue;
        }
        const directiveTransform = context.directiveTransforms[name];
        if (directiveTransform) {
          // has built-in directive transform.
          const { props, needRuntime } = directiveTransform(prop, node, context);
          !ssr && props.forEach(analyzePatchFlag);
          properties.push(...props);
          if (needRuntime) {
            runtimeDirectives.push(prop);
            if (isSymbol(needRuntime)) {
              directiveImportMap.set(prop, needRuntime);
            }
          }
        }
        else {
          // no built-in transform, this is a user custom directive.
          runtimeDirectives.push(prop);
        }
      }
    }
    let propsExpression = undefined;
    // has v-bind="object" or v-on="object", wrap with mergeProps
    if (mergeArgs.length) {
      if (properties.length) {
        mergeArgs.push(createObjectExpression(dedupeProperties(properties), elementLoc));
      }
      if (mergeArgs.length > 1) {
        propsExpression = createCallExpression(context.helper(MERGE_PROPS), mergeArgs, elementLoc);
      }
      else {
        // single v-bind with nothing else - no need for a mergeProps call
        propsExpression = mergeArgs[0];
      }
    }
    else if (properties.length) {
      propsExpression = createObjectExpression(dedupeProperties(properties), elementLoc);
    }
    // patchFlag analysis
    if (hasDynamicKeys) {
      patchFlag |= 16 /* FULL_PROPS */;
    }
    else {
      if (hasClassBinding) {
        patchFlag |= 2 /* CLASS */;
      }
      if (hasStyleBinding) {
        patchFlag |= 4 /* STYLE */;
      }
      if (dynamicPropNames.length) {
        patchFlag |= 8 /* PROPS */;
      }
      if (hasHydrationEventBinding) {
        patchFlag |= 32 /* HYDRATE_EVENTS */;
      }
    }
    if ((patchFlag === 0 || patchFlag === 32 /* HYDRATE_EVENTS */) &&
      (hasRef || hasVnodeHook || runtimeDirectives.length > 0)) {
      patchFlag |= 512 /* NEED_PATCH */;
    }
    return {
      props: propsExpression,
      directives: runtimeDirectives,
      patchFlag,
      dynamicPropNames
    };
  }
  // Dedupe props in an object literal.
  // Literal duplicated attributes would have been warned during the parse phase,
  // however, it's possible to encounter duplicated `onXXX` handlers with different
  // modifiers. We also need to merge static and dynamic class / style attributes.
  // - onXXX handlers / style: merge into array
  // - class: merge into single expression with concatenation
  function dedupeProperties(properties) {
    const knownProps = new Map();
    const deduped = [];
    for (let i = 0; i < properties.length; i++) {
      const prop = properties[i];
      // dynamic keys are always allowed
      if (prop.key.type === 8 /* COMPOUND_EXPRESSION */ || !prop.key.isStatic) {
        deduped.push(prop);
        continue;
      }
      const name = prop.key.content;
      const existing = knownProps.get(name);
      if (existing) {
        if (name === 'style' || name === 'class' || name.startsWith('on')) {
          mergeAsArray(existing, prop);
        }
        // unexpected duplicate, should have emitted error during parse
      }
      else {
        knownProps.set(name, prop);
        deduped.push(prop);
      }
    }
    return deduped;
  }
  function mergeAsArray(existing, incoming) {
    if (existing.value.type === 17 /* JS_ARRAY_EXPRESSION */) {
      existing.value.elements.push(incoming.value);
    }
    else {
      existing.value = createArrayExpression([existing.value, incoming.value], existing.loc);
    }
  }
  function buildDirectiveArgs(dir, context) {
    const dirArgs = [];
    const runtime = directiveImportMap.get(dir);
    if (runtime) {
      // built-in directive with runtime
      dirArgs.push(context.helperString(runtime));
    }
    else {
      {
        // inject statement for resolving directive
        context.helper(RESOLVE_DIRECTIVE);
        context.directives.add(dir.name);
        dirArgs.push(toValidAssetId(dir.name, `directive`));
      }
    }
    const { loc } = dir;
    if (dir.exp)
      dirArgs.push(dir.exp);
    if (dir.arg) {
      if (!dir.exp) {
        dirArgs.push(`void 0`);
      }
      dirArgs.push(dir.arg);
    }
    if (Object.keys(dir.modifiers).length) {
      if (!dir.arg) {
        if (!dir.exp) {
          dirArgs.push(`void 0`);
        }
        dirArgs.push(`void 0`);
      }
      const trueExpression = createSimpleExpression(`true`, false, loc);
      dirArgs.push(createObjectExpression(dir.modifiers.map(modifier => createObjectProperty(modifier, trueExpression)), loc));
    }
    return createArrayExpression(dirArgs, dir.loc);
  }
  function stringifyDynamicPropNames(props) {
    let propsNamesString = `[`;
    for (let i = 0, l = props.length; i < l; i++) {
      propsNamesString += JSON.stringify(props[i]);
      if (i < l - 1)
        propsNamesString += ', ';
    }
    return propsNamesString + `]`;
  }
  function isComponentTag(tag) {
    return tag[0].toLowerCase() + tag.slice(1) === 'component';
  }

  const transformSlotOutlet = (node, context) => {
    if (isSlotOutlet(node)) {
      const { children, loc } = node;
      const { slotName, slotProps } = processSlotOutlet(node, context);
      const slotArgs = [
        context.prefixIdentifiers ? `_ctx.$slots` : `$slots`,
        slotName
      ];
      if (slotProps) {
        slotArgs.push(slotProps);
      }
      if (children.length) {
        if (!slotProps) {
          slotArgs.push(`{}`);
        }
        slotArgs.push(createFunctionExpression([], children, false, false, loc));
      }
      if (context.scopeId && !context.slotted) {
        if (!slotProps) {
          slotArgs.push(`{}`);
        }
        if (!children.length) {
          slotArgs.push(`undefined`);
        }
        slotArgs.push(`true`);
      }
      node.codegenNode = createCallExpression(context.helper(RENDER_SLOT), slotArgs, loc);
    }
  };
  function processSlotOutlet(node, context) {
    let slotName = `"default"`;
    let slotProps = undefined;
    const nonNameProps = [];
    for (let i = 0; i < node.props.length; i++) {
      const p = node.props[i];
      if (p.type === 6 /* ATTRIBUTE */) {
        if (p.value) {
          if (p.name === 'name') {
            slotName = JSON.stringify(p.value.content);
          }
          else {
            p.name = camelize(p.name);
            nonNameProps.push(p);
          }
        }
      }
      else {
        if (p.name === 'bind' && isBindKey(p.arg, 'name')) {
          if (p.exp)
            slotName = p.exp;
        }
        else {
          if (p.name === 'bind' && p.arg && isStaticExp(p.arg)) {
            p.arg.content = camelize(p.arg.content);
          }
          nonNameProps.push(p);
        }
      }
    }
    if (nonNameProps.length > 0) {
      const { props, directives } = buildProps(node, context, nonNameProps);
      slotProps = props;
      if (directives.length) {
        context.onError(createCompilerError(35 /* X_V_SLOT_UNEXPECTED_DIRECTIVE_ON_SLOT_OUTLET */, directives[0].loc));
      }
    }
    return {
      slotName,
      slotProps
    };
  }

  const fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^\s*function(?:\s+[\w$]+)?\s*\(/;
  const transformOn = (dir, node, context, augmentor) => {
    const { loc, modifiers, arg } = dir;
    if (!dir.exp && !modifiers.length) {
      context.onError(createCompilerError(34 /* X_V_ON_NO_EXPRESSION */, loc));
    }
    let eventName;
    if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
      if (arg.isStatic) {
        const rawName = arg.content;
        // for all event listeners, auto convert it to camelCase. See issue #2249
        eventName = createSimpleExpression(toHandlerKey(camelize(rawName)), true, arg.loc);
      }
      else {
        // #2388
        eventName = createCompoundExpression([
          `${context.helperString(TO_HANDLER_KEY)}(`,
          arg,
          `)`
        ]);
      }
    }
    else {
      // already a compound expression.
      eventName = arg;
      eventName.children.unshift(`${context.helperString(TO_HANDLER_KEY)}(`);
      eventName.children.push(`)`);
    }
    // handler processing
    let exp = dir.exp;
    if (exp && !exp.content.trim()) {
      exp = undefined;
    }
    let shouldCache = context.cacheHandlers && !exp;
    if (exp) {
      const isMemberExp = isMemberExpression(exp.content);
      const isInlineStatement = !(isMemberExp || fnExpRE.test(exp.content));
      const hasMultipleStatements = exp.content.includes(`;`);
      {
        validateBrowserExpression(exp, context, false, hasMultipleStatements);
      }
      if (isInlineStatement || (shouldCache && isMemberExp)) {
        // wrap inline statement in a function expression
        exp = createCompoundExpression([
          `${isInlineStatement
            ? `$event`
            : `${``}(...args)`} => ${hasMultipleStatements ? `{` : `(`}`,
          exp,
          hasMultipleStatements ? `}` : `)`
        ]);
      }
    }
    let ret = {
      props: [
        createObjectProperty(eventName, exp || createSimpleExpression(`() => {}`, false, loc))
      ]
    };
    // apply extended compiler augmentor
    if (augmentor) {
      ret = augmentor(ret);
    }
    if (shouldCache) {
      // cache handlers so that it's always the same handler being passed down.
      // this avoids unnecessary re-renders when users use inline handlers on
      // components.
      ret.props[0].value = context.cache(ret.props[0].value);
    }
    return ret;
  };

  // v-bind without arg is handled directly in ./transformElements.ts due to it affecting
  // codegen for the entire props object. This transform here is only for v-bind
  // *with* args.
  const transformBind = (dir, node, context) => {
    const { exp, modifiers, loc } = dir;
    const arg = dir.arg;
    if (arg.type !== 4 /* SIMPLE_EXPRESSION */) {
      arg.children.unshift(`(`);
      arg.children.push(`) || ""`);
    }
    else if (!arg.isStatic) {
      arg.content = `${arg.content} || ""`;
    }
    // .prop is no longer necessary due to new patch behavior
    // .sync is replaced by v-model:arg
    if (modifiers.includes('camel')) {
      if (arg.type === 4 /* SIMPLE_EXPRESSION */) {
        if (arg.isStatic) {
          arg.content = camelize(arg.content);
        }
        else {
          arg.content = `${context.helperString(CAMELIZE)}(${arg.content})`;
        }
      }
      else {
        arg.children.unshift(`${context.helperString(CAMELIZE)}(`);
        arg.children.push(`)`);
      }
    }
    if (!exp ||
      (exp.type === 4 /* SIMPLE_EXPRESSION */ && !exp.content.trim())) {
      context.onError(createCompilerError(33 /* X_V_BIND_NO_EXPRESSION */, loc));
      return {
        props: [createObjectProperty(arg, createSimpleExpression('', true, loc))]
      };
    }
    return {
      props: [createObjectProperty(arg, exp)]
    };
  };

  // Merge adjacent text nodes and expressions into a single expression
  // e.g. <div>abc {{ d }} {{ e }}</div> should have a single expression node as child.
  const transformText = (node, context) => {
    if (node.type === 0 /* ROOT */ ||
      node.type === 1 /* ELEMENT */ ||
      node.type === 11 /* FOR */ ||
      node.type === 10 /* IF_BRANCH */) {
      // perform the transform on node exit so that all expressions have already
      // been processed.
      return () => {
        const children = node.children;
        let currentContainer = undefined;
        let hasText = false;
        for (let i = 0; i < children.length; i++) {
          const child = children[i];
          if (isText(child)) {
            hasText = true;
            for (let j = i + 1; j < children.length; j++) {
              const next = children[j];
              if (isText(next)) {
                if (!currentContainer) {
                  currentContainer = children[i] = {
                    type: 8 /* COMPOUND_EXPRESSION */,
                    loc: child.loc,
                    children: [child]
                  };
                }
                // merge adjacent text node into current
                currentContainer.children.push(` + `, next);
                children.splice(j, 1);
                j--;
              }
              else {
                currentContainer = undefined;
                break;
              }
            }
          }
        }
        if (!hasText ||
          // if this is a plain element with a single text child, leave it
          // as-is since the runtime has dedicated fast path for this by directly
          // setting textContent of the element.
          // for component root it's always normalized anyway.
          (children.length === 1 &&
            (node.type === 0 /* ROOT */ ||
              (node.type === 1 /* ELEMENT */ &&
                node.tagType === 0 /* ELEMENT */)))) {
          return;
        }
        // pre-convert text nodes into createTextVNode(text) calls to avoid
        // runtime normalization.
        for (let i = 0; i < children.length; i++) {
          const child = children[i];
          if (isText(child) || child.type === 8 /* COMPOUND_EXPRESSION */) {
            const callArgs = [];
            // createTextVNode defaults to single whitespace, so if it is a
            // single space the code could be an empty call to save bytes.
            if (child.type !== 2 /* TEXT */ || child.content !== ' ') {
              callArgs.push(child);
            }
            // mark dynamic text with flag so it gets patched inside a block
            if (!context.ssr &&
              getConstantType(child, context) === 0 /* NOT_CONSTANT */) {
              callArgs.push(1 /* TEXT */ +
                (` /* ${PatchFlagNames[1 /* TEXT */]} */` ));
            }
            children[i] = {
              type: 12 /* TEXT_CALL */,
              content: child,
              loc: child.loc,
              codegenNode: createCallExpression(context.helper(CREATE_TEXT), callArgs)
            };
          }
        }
      };
    }
  };

  const seen = new WeakSet();
  const transformOnce = (node, context) => {
    if (node.type === 1 /* ELEMENT */ && findDir(node, 'once', true)) {
      if (seen.has(node)) {
        return;
      }
      seen.add(node);
      context.helper(SET_BLOCK_TRACKING);
      return () => {
        const cur = context.currentNode;
        if (cur.codegenNode) {
          cur.codegenNode = context.cache(cur.codegenNode, true /* isVNode */);
        }
      };
    }
  };

  const transformModel = (dir, node, context) => {
    const { exp, arg } = dir;
    if (!exp) {
      context.onError(createCompilerError(40 /* X_V_MODEL_NO_EXPRESSION */, dir.loc));
      return createTransformProps();
    }
    const rawExp = exp.loc.source;
    const expString = exp.type === 4 /* SIMPLE_EXPRESSION */ ? exp.content : rawExp;
    // im SFC <script setup> inline mode, the exp may have been transformed into
    // _unref(exp)
    context.bindingMetadata[rawExp];
    const maybeRef = !true    /* SETUP_CONST */;
    if (!isMemberExpression(expString) && !maybeRef) {
      context.onError(createCompilerError(41 /* X_V_MODEL_MALFORMED_EXPRESSION */, exp.loc));
      return createTransformProps();
    }
    const propName = arg ? arg : createSimpleExpression('modelValue', true);
    const eventName = arg
      ? isStaticExp(arg)
        ? `onUpdate:${arg.content}`
        : createCompoundExpression(['"onUpdate:" + ', arg])
      : `onUpdate:modelValue`;
    let assignmentExp;
    const eventArg = context.isTS ? `($event: any)` : `$event`;
    {
      assignmentExp = createCompoundExpression([
        `${eventArg} => (`,
        exp,
        ` = $event)`
      ]);
    }
    const props = [
      // modelValue: foo
      createObjectProperty(propName, dir.exp),
      // "onUpdate:modelValue": $event => (foo = $event)
      createObjectProperty(eventName, assignmentExp)
    ];
    // modelModifiers: { foo: true, "bar-baz": true }
    if (dir.modifiers.length && node.tagType === 1 /* COMPONENT */) {
      const modifiers = dir.modifiers
        .map(m => (isSimpleIdentifier(m) ? m : JSON.stringify(m)) + `: true`)
        .join(`, `);
      const modifiersKey = arg
        ? isStaticExp(arg)
          ? `${arg.content}Modifiers`
          : createCompoundExpression([arg, ' + "Modifiers"'])
        : `modelModifiers`;
      props.push(createObjectProperty(modifiersKey, createSimpleExpression(`{ ${modifiers} }`, false, dir.loc, 2 /* CAN_HOIST */)));
    }
    return createTransformProps(props);
  };
  function createTransformProps(props = []) {
    return { props };
  }

  function getBaseTransformPreset(prefixIdentifiers) {
    return [
      [
        transformOnce,
        transformIf,
        transformFor,
        ...([transformExpression]
        ),
        transformSlotOutlet,
        transformElement,
        trackSlotScopes,
        transformText
      ],
      {
        on: transformOn,
        bind: transformBind,
        model: transformModel
      }
    ];
  }
  // we name it `baseCompile` so that higher order compilers like
  // @vue/compiler-dom can export `compile` while re-exporting everything else.
  function baseCompile(template, options = {}) {
    const onError = options.onError || defaultOnError;
    const isModuleMode = options.mode === 'module';
    /* istanbul ignore if */
    {
      if (options.prefixIdentifiers === true) {
        onError(createCompilerError(45 /* X_PREFIX_ID_NOT_SUPPORTED */));
      }
      else if (isModuleMode) {
        onError(createCompilerError(46 /* X_MODULE_MODE_NOT_SUPPORTED */));
      }
    }
    const prefixIdentifiers = !true ;
    if (options.cacheHandlers) {
      onError(createCompilerError(47 /* X_CACHE_HANDLER_NOT_SUPPORTED */));
    }
    if (options.scopeId && !isModuleMode) {
      onError(createCompilerError(48 /* X_SCOPE_ID_NOT_SUPPORTED */));
    }
    const ast = isString(template) ? baseParse(template, options) : template;
    const [nodeTransforms, directiveTransforms] = getBaseTransformPreset();
    transform(ast, extend({}, options, {
      prefixIdentifiers,
      nodeTransforms: [
        ...nodeTransforms,
        ...(options.nodeTransforms || []) // user transforms
      ],
      directiveTransforms: extend({}, directiveTransforms, options.directiveTransforms || {} // user transforms
      )
    }));
    return generate(ast, extend({}, options, {
      prefixIdentifiers
    }));
  }

  const noopDirectiveTransform = () => ({ props: [] });

  const V_MODEL_RADIO = Symbol(`vModelRadio` );
  const V_MODEL_CHECKBOX = Symbol(`vModelCheckbox` );
  const V_MODEL_TEXT = Symbol(`vModelText` );
  const V_MODEL_SELECT = Symbol(`vModelSelect` );
  const V_MODEL_DYNAMIC = Symbol(`vModelDynamic` );
  const V_ON_WITH_MODIFIERS = Symbol(`vOnModifiersGuard` );
  const V_ON_WITH_KEYS = Symbol(`vOnKeysGuard` );
  const V_SHOW = Symbol(`vShow` );
  const TRANSITION$1 = Symbol(`Transition` );
  const TRANSITION_GROUP = Symbol(`TransitionGroup` );
  registerRuntimeHelpers({
    [V_MODEL_RADIO]: `vModelRadio`,
    [V_MODEL_CHECKBOX]: `vModelCheckbox`,
    [V_MODEL_TEXT]: `vModelText`,
    [V_MODEL_SELECT]: `vModelSelect`,
    [V_MODEL_DYNAMIC]: `vModelDynamic`,
    [V_ON_WITH_MODIFIERS]: `withModifiers`,
    [V_ON_WITH_KEYS]: `withKeys`,
    [V_SHOW]: `vShow`,
    [TRANSITION$1]: `Transition`,
    [TRANSITION_GROUP]: `TransitionGroup`
  });

  /* eslint-disable no-restricted-globals */
  let decoder;
  function decodeHtmlBrowser(raw) {
    (decoder || (decoder = document.createElement('div'))).innerHTML = raw;
    return decoder.textContent;
  }

  const isRawTextContainer = /*#__PURE__*/ makeMap('style,iframe,script,noscript', true);
  const parserOptions = {
    isVoidTag,
    isNativeTag: tag => isHTMLTag(tag) || isSVGTag(tag),
    isPreTag: tag => tag === 'pre',
    decodeEntities: decodeHtmlBrowser ,
    isBuiltInComponent: (tag) => {
      if (isBuiltInType(tag, `Transition`)) {
        return TRANSITION$1;
      }
      else if (isBuiltInType(tag, `TransitionGroup`)) {
        return TRANSITION_GROUP;
      }
    },
    // https://html.spec.whatwg.org/multipage/parsing.html#tree-construction-dispatcher
    getNamespace(tag, parent) {
      let ns = parent ? parent.ns : 0 /* HTML */;
      if (parent && ns === 2 /* MATH_ML */) {
        if (parent.tag === 'annotation-xml') {
          if (tag === 'svg') {
            return 1 /* SVG */;
          }
          if (parent.props.some(a => a.type === 6 /* ATTRIBUTE */ &&
            a.name === 'encoding' &&
            a.value != null &&
            (a.value.content === 'text/html' ||
              a.value.content === 'application/xhtml+xml'))) {
            ns = 0 /* HTML */;
          }
        }
        else if (/^m(?:[ions]|text)$/.test(parent.tag) &&
          tag !== 'mglyph' &&
          tag !== 'malignmark') {
          ns = 0 /* HTML */;
        }
      }
      else if (parent && ns === 1 /* SVG */) {
        if (parent.tag === 'foreignObject' ||
          parent.tag === 'desc' ||
          parent.tag === 'title') {
          ns = 0 /* HTML */;
        }
      }
      if (ns === 0 /* HTML */) {
        if (tag === 'svg') {
          return 1 /* SVG */;
        }
        if (tag === 'math') {
          return 2 /* MATH_ML */;
        }
      }
      return ns;
    },
    // https://html.spec.whatwg.org/multipage/parsing.html#parsing-html-fragments
    getTextMode({ tag, ns }) {
      if (ns === 0 /* HTML */) {
        if (tag === 'textarea' || tag === 'title') {
          return 1 /* RCDATA */;
        }
        if (isRawTextContainer(tag)) {
          return 2 /* RAWTEXT */;
        }
      }
      return 0 /* DATA */;
    }
  };

  // Parse inline CSS strings for static style attributes into an object.
  // This is a NodeTransform since it works on the static `style` attribute and
  // converts it into a dynamic equivalent:
  // style="color: red" -> :style='{ "color": "red" }'
  // It is then processed by `transformElement` and included in the generated
  // props.
  const transformStyle = node => {
    if (node.type === 1 /* ELEMENT */) {
      node.props.forEach((p, i) => {
        if (p.type === 6 /* ATTRIBUTE */ && p.name === 'style' && p.value) {
          // replace p with an expression node
          node.props[i] = {
            type: 7 /* DIRECTIVE */,
            name: `bind`,
            arg: createSimpleExpression(`style`, true, p.loc),
            exp: parseInlineCSS(p.value.content, p.loc),
            modifiers: [],
            loc: p.loc
          };
        }
      });
    }
  };
  const parseInlineCSS = (cssText, loc) => {
    const normalized = parseStringStyle(cssText);
    return createSimpleExpression(JSON.stringify(normalized), false, loc, 3 /* CAN_STRINGIFY */);
  };

  function createDOMCompilerError(code, loc) {
    return createCompilerError(code, loc, DOMErrorMessages );
  }
  const DOMErrorMessages = {
    [49 /* X_V_HTML_NO_EXPRESSION */]: `v-html is missing expression.`,
    [50 /* X_V_HTML_WITH_CHILDREN */]: `v-html will override element children.`,
    [51 /* X_V_TEXT_NO_EXPRESSION */]: `v-text is missing expression.`,
    [52 /* X_V_TEXT_WITH_CHILDREN */]: `v-text will override element children.`,
    [53 /* X_V_MODEL_ON_INVALID_ELEMENT */]: `v-model can only be used on <input>, <textarea> and <select> elements.`,
    [54 /* X_V_MODEL_ARG_ON_ELEMENT */]: `v-model argument is not supported on plain elements.`,
    [55 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */]: `v-model cannot be used on file inputs since they are read-only. Use a v-on:change listener instead.`,
    [56 /* X_V_MODEL_UNNECESSARY_VALUE */]: `Unnecessary value binding used alongside v-model. It will interfere with v-model's behavior.`,
    [57 /* X_V_SHOW_NO_EXPRESSION */]: `v-show is missing expression.`,
    [58 /* X_TRANSITION_INVALID_CHILDREN */]: `<Transition> expects exactly one child element or component.`,
    [59 /* X_IGNORED_SIDE_EFFECT_TAG */]: `Tags with side effect (<script> and <style>) are ignored in client component templates.`
  };

  const transformVHtml = (dir, node, context) => {
    const { exp, loc } = dir;
    if (!exp) {
      context.onError(createDOMCompilerError(49 /* X_V_HTML_NO_EXPRESSION */, loc));
    }
    if (node.children.length) {
      context.onError(createDOMCompilerError(50 /* X_V_HTML_WITH_CHILDREN */, loc));
      node.children.length = 0;
    }
    return {
      props: [
        createObjectProperty(createSimpleExpression(`innerHTML`, true, loc), exp || createSimpleExpression('', true))
      ]
    };
  };

  const transformVText = (dir, node, context) => {
    const { exp, loc } = dir;
    if (!exp) {
      context.onError(createDOMCompilerError(51 /* X_V_TEXT_NO_EXPRESSION */, loc));
    }
    if (node.children.length) {
      context.onError(createDOMCompilerError(52 /* X_V_TEXT_WITH_CHILDREN */, loc));
      node.children.length = 0;
    }
    return {
      props: [
        createObjectProperty(createSimpleExpression(`textContent`, true), exp
          ? createCallExpression(context.helperString(TO_DISPLAY_STRING), [exp], loc)
          : createSimpleExpression('', true))
      ]
    };
  };

  const transformModel$1 = (dir, node, context) => {
    const baseResult = transformModel(dir, node, context);
    // base transform has errors OR component v-model (only need props)
    if (!baseResult.props.length || node.tagType === 1 /* COMPONENT */) {
      return baseResult;
    }
    if (dir.arg) {
      context.onError(createDOMCompilerError(54 /* X_V_MODEL_ARG_ON_ELEMENT */, dir.arg.loc));
    }
    function checkDuplicatedValue() {
      const value = findProp(node, 'value');
      if (value) {
        context.onError(createDOMCompilerError(56 /* X_V_MODEL_UNNECESSARY_VALUE */, value.loc));
      }
    }
    const { tag } = node;
    const isCustomElement = context.isCustomElement(tag);
    if (tag === 'input' ||
      tag === 'textarea' ||
      tag === 'select' ||
      isCustomElement) {
      let directiveToUse = V_MODEL_TEXT;
      let isInvalidType = false;
      if (tag === 'input' || isCustomElement) {
        const type = findProp(node, `type`);
        if (type) {
          if (type.type === 7 /* DIRECTIVE */) {
            // :type="foo"
            directiveToUse = V_MODEL_DYNAMIC;
          }
          else if (type.value) {
            switch (type.value.content) {
              case 'radio':
                directiveToUse = V_MODEL_RADIO;
                break;
              case 'checkbox':
                directiveToUse = V_MODEL_CHECKBOX;
                break;
              case 'file':
                isInvalidType = true;
                context.onError(createDOMCompilerError(55 /* X_V_MODEL_ON_FILE_INPUT_ELEMENT */, dir.loc));
                break;
              default:
                // text type
                checkDuplicatedValue();
                break;
            }
          }
        }
        else if (hasDynamicKeyVBind(node)) {
          // element has bindings with dynamic keys, which can possibly contain
          // "type".
          directiveToUse = V_MODEL_DYNAMIC;
        }
        else {
          // text type
          checkDuplicatedValue();
        }
      }
      else if (tag === 'select') {
        directiveToUse = V_MODEL_SELECT;
      }
      else {
        // textarea
        checkDuplicatedValue();
      }
      // inject runtime directive
      // by returning the helper symbol via needRuntime
      // the import will replaced a resolveDirective call.
      if (!isInvalidType) {
        baseResult.needRuntime = context.helper(directiveToUse);
      }
    }
    else {
      context.onError(createDOMCompilerError(53 /* X_V_MODEL_ON_INVALID_ELEMENT */, dir.loc));
    }
    // native vmodel doesn't need the `modelValue` props since they are also
    // passed to the runtime as `binding.value`. removing it reduces code size.
    baseResult.props = baseResult.props.filter(p => !(p.key.type === 4 /* SIMPLE_EXPRESSION */ &&
      p.key.content === 'modelValue'));
    return baseResult;
  };

  const isEventOptionModifier = /*#__PURE__*/ makeMap(`passive,once,capture`);
  const isNonKeyModifier = /*#__PURE__*/ makeMap(
    // event propagation management
    `stop,prevent,self,`   +
    // system modifiers + exact
    `ctrl,shift,alt,meta,exact,` +
    // mouse
    `middle`);
  // left & right could be mouse or key modifiers based on event type
  const maybeKeyModifier = /*#__PURE__*/ makeMap('left,right');
  const isKeyboardEvent = /*#__PURE__*/ makeMap(`onkeyup,onkeydown,onkeypress`, true);
  const resolveModifiers = (key, modifiers) => {
    const keyModifiers = [];
    const nonKeyModifiers = [];
    const eventOptionModifiers = [];
    for (let i = 0; i < modifiers.length; i++) {
      const modifier = modifiers[i];
      if (isEventOptionModifier(modifier)) {
        // eventOptionModifiers: modifiers for addEventListener() options,
        // e.g. .passive & .capture
        eventOptionModifiers.push(modifier);
      }
      else {
        // runtimeModifiers: modifiers that needs runtime guards
        if (maybeKeyModifier(modifier)) {
          if (isStaticExp(key)) {
            if (isKeyboardEvent(key.content)) {
              keyModifiers.push(modifier);
            }
            else {
              nonKeyModifiers.push(modifier);
            }
          }
          else {
            keyModifiers.push(modifier);
            nonKeyModifiers.push(modifier);
          }
        }
        else {
          if (isNonKeyModifier(modifier)) {
            nonKeyModifiers.push(modifier);
          }
          else {
            keyModifiers.push(modifier);
          }
        }
      }
    }
    return {
      keyModifiers,
      nonKeyModifiers,
      eventOptionModifiers
    };
  };
  const transformClick = (key, event) => {
    const isStaticClick = isStaticExp(key) && key.content.toLowerCase() === 'onclick';
    return isStaticClick
      ? createSimpleExpression(event, true)
      : key.type !== 4 /* SIMPLE_EXPRESSION */
        ? createCompoundExpression([
          `(`,
          key,
          `) === "onClick" ? "${event}" : (`,
          key,
          `)`
        ])
        : key;
  };
  const transformOn$1 = (dir, node, context) => {
    return transformOn(dir, node, context, baseResult => {
      const { modifiers } = dir;
      if (!modifiers.length)
        return baseResult;
      let { key, value: handlerExp } = baseResult.props[0];
      const { keyModifiers, nonKeyModifiers, eventOptionModifiers } = resolveModifiers(key, modifiers);
      // normalize click.right and click.middle since they don't actually fire
      if (nonKeyModifiers.includes('right')) {
        key = transformClick(key, `onContextmenu`);
      }
      if (nonKeyModifiers.includes('middle')) {
        key = transformClick(key, `onMouseup`);
      }
      if (nonKeyModifiers.length) {
        handlerExp = createCallExpression(context.helper(V_ON_WITH_MODIFIERS), [
          handlerExp,
          JSON.stringify(nonKeyModifiers)
        ]);
      }
      if (keyModifiers.length &&
        // if event name is dynamic, always wrap with keys guard
        (!isStaticExp(key) || isKeyboardEvent(key.content))) {
        handlerExp = createCallExpression(context.helper(V_ON_WITH_KEYS), [
          handlerExp,
          JSON.stringify(keyModifiers)
        ]);
      }
      if (eventOptionModifiers.length) {
        const modifierPostfix = eventOptionModifiers.map(capitalize).join('');
        key = isStaticExp(key)
          ? createSimpleExpression(`${key.content}${modifierPostfix}`, true)
          : createCompoundExpression([`(`, key, `) + "${modifierPostfix}"`]);
      }
      return {
        props: [createObjectProperty(key, handlerExp)]
      };
    });
  };

  const transformShow = (dir, node, context) => {
    const { exp, loc } = dir;
    if (!exp) {
      context.onError(createDOMCompilerError(57 /* X_V_SHOW_NO_EXPRESSION */, loc));
    }
    return {
      props: [],
      needRuntime: context.helper(V_SHOW)
    };
  };

  const warnTransitionChildren = (node, context) => {
    if (node.type === 1 /* ELEMENT */ &&
      node.tagType === 1 /* COMPONENT */) {
      const component = context.isBuiltInComponent(node.tag);
      if (component === TRANSITION$1) {
        return () => {
          if (node.children.length && hasMultipleChildren(node)) {
            context.onError(createDOMCompilerError(58 /* X_TRANSITION_INVALID_CHILDREN */, {
              start: node.children[0].loc.start,
              end: node.children[node.children.length - 1].loc.end,
              source: ''
            }));
          }
        };
      }
    }
  };
  function hasMultipleChildren(node) {
    // #1352 filter out potential comment nodes.
    const children = (node.children = node.children.filter(c => c.type !== 3 /* COMMENT */));
    const child = children[0];
    return (children.length !== 1 ||
      child.type === 11 /* FOR */ ||
      (child.type === 9 /* IF */ && child.branches.some(hasMultipleChildren)));
  }

  const ignoreSideEffectTags = (node, context) => {
    if (node.type === 1 /* ELEMENT */ &&
      node.tagType === 0 /* ELEMENT */ &&
      (node.tag === 'script' || node.tag === 'style')) {
      context.onError(createDOMCompilerError(59 /* X_IGNORED_SIDE_EFFECT_TAG */, node.loc));
      context.removeNode();
    }
  };

  const DOMNodeTransforms = [
    transformStyle,
    ...([warnTransitionChildren] )
  ];
  const DOMDirectiveTransforms = {
    cloak: noopDirectiveTransform,
    html: transformVHtml,
    text: transformVText,
    model: transformModel$1,
    on: transformOn$1,
    show: transformShow
  };
  function compile$1(template, options = {}) {
    return baseCompile(template, extend({}, parserOptions, options, {
      nodeTransforms: [
        // ignore <script> and <tag>
        // this is not put inside DOMNodeTransforms because that list is used
        // by compiler-ssr to generate vnode fallback branches
        ignoreSideEffectTags,
        ...DOMNodeTransforms,
        ...(options.nodeTransforms || [])
      ],
      directiveTransforms: extend({}, DOMDirectiveTransforms, options.directiveTransforms || {}),
      transformHoist: null
    }));
  }

  // This entry is the "full-build" that includes both the runtime
  {
    initDev();
  }
  const compileCache = Object.create(null);
  function compileToFunction(template, options) {
    if (!isString(template)) {
      if (template.nodeType) {
        template = template.innerHTML;
      }
      else {
        warn(`invalid template option: `, template);
        return NOOP;
      }
    }
    const key = template;
    const cached = compileCache[key];
    if (cached) {
      return cached;
    }
    if (template[0] === '#') {
      const el = document.querySelector(template);
      if (!el) {
        warn(`Template element not found or is empty: ${template}`);
      }
      // __UNSAFE__
      // Reason: potential execution of JS expressions in in-DOM template.
      // The user must make sure the in-DOM template is trusted. If it's rendered
      // by the server, the template should not contain any user data.
      template = el ? el.innerHTML : ``;
    }
    const { code } = compile$1(template, extend({
      hoistStatic: true,
      onError(err) {
        {
          const message = `Template compilation error: ${err.message}`;
          const codeFrame = err.loc &&
            generateCodeFrame(template, err.loc.start.offset, err.loc.end.offset);
          warn(codeFrame ? `${message}\n${codeFrame}` : message);
        }
      }
    }, options));
    // The wildcard import results in a huge object with every export
    // with keys that cannot be mangled, and can be quite heavy size-wise.
    // In the global build we know `Vue` is available globally so we can avoid
    // the wildcard object.
    const render = (new Function(code)()
    );
    render._rc = true;
    return (compileCache[key] = render);
  }
  registerRuntimeCompiler(compileToFunction);

  exports.BaseTransition = BaseTransition;
  exports.Comment = Comment;
  exports.Fragment = Fragment;
  exports.KeepAlive = KeepAlive;
  exports.Static = Static;
  exports.Suspense = Suspense;
  exports.Teleport = Teleport;
  exports.Text = Text;
  exports.Transition = Transition;
  exports.TransitionGroup = TransitionGroup;
  exports.callWithAsyncErrorHandling = callWithAsyncErrorHandling;
  exports.callWithErrorHandling = callWithErrorHandling;
  exports.camelize = camelize;
  exports.capitalize = capitalize;
  exports.cloneVNode = cloneVNode;
  exports.compile = compileToFunction;
  exports.computed = computed$1;
  exports.createApp = createApp;
  exports.createBlock = createBlock;
  exports.createCommentVNode = createCommentVNode;
  exports.createHydrationRenderer = createHydrationRenderer;
  exports.createRenderer = createRenderer;
  exports.createSSRApp = createSSRApp;
  exports.createSlots = createSlots;
  exports.createStaticVNode = createStaticVNode;
  exports.createTextVNode = createTextVNode;
  exports.createVNode = createVNode;
  exports.customRef = customRef;
  exports.defineAsyncComponent = defineAsyncComponent;
  exports.defineComponent = defineComponent;
  exports.defineEmit = defineEmit;
  exports.defineProps = defineProps;
  exports.getCurrentInstance = getCurrentInstance;
  exports.getTransitionRawChildren = getTransitionRawChildren;
  exports.h = h;
  exports.handleError = handleError;
  exports.hydrate = hydrate;
  exports.initCustomFormatter = initCustomFormatter;
  exports.inject = inject;
  exports.isProxy = isProxy;
  exports.isReactive = isReactive;
  exports.isReadonly = isReadonly;
  exports.isRef = isRef;
  exports.isRuntimeOnly = isRuntimeOnly;
  exports.isVNode = isVNode;
  exports.markRaw = markRaw;
  exports.mergeProps = mergeProps;
  exports.nextTick = nextTick;
  exports.onActivated = onActivated;
  exports.onBeforeMount = onBeforeMount;
  exports.onBeforeUnmount = onBeforeUnmount;
  exports.onBeforeUpdate = onBeforeUpdate;
  exports.onDeactivated = onDeactivated;
  exports.onErrorCaptured = onErrorCaptured;
  exports.onMounted = onMounted;
  exports.onRenderTracked = onRenderTracked;
  exports.onRenderTriggered = onRenderTriggered;
  exports.onUnmounted = onUnmounted;
  exports.onUpdated = onUpdated;
  exports.openBlock = openBlock;
  exports.popScopeId = popScopeId;
  exports.provide = provide;
  exports.proxyRefs = proxyRefs;
  exports.pushScopeId = pushScopeId;
  exports.queuePostFlushCb = queuePostFlushCb;
  exports.reactive = reactive;
  exports.readonly = readonly;
  exports.ref = ref;
  exports.registerRuntimeCompiler = registerRuntimeCompiler;
  exports.render = render;
  exports.renderList = renderList;
  exports.renderSlot = renderSlot;
  exports.resolveComponent = resolveComponent;
  exports.resolveDirective = resolveDirective;
  exports.resolveDynamicComponent = resolveDynamicComponent;
  exports.resolveTransitionHooks = resolveTransitionHooks;
  exports.setBlockTracking = setBlockTracking;
  exports.setDevtoolsHook = setDevtoolsHook;
  exports.setTransitionHooks = setTransitionHooks;
  exports.shallowReactive = shallowReactive;
  exports.shallowReadonly = shallowReadonly;
  exports.shallowRef = shallowRef;
  exports.ssrContextKey = ssrContextKey;
  exports.ssrUtils = ssrUtils;
  exports.toDisplayString = toDisplayString;
  exports.toHandlerKey = toHandlerKey;
  exports.toHandlers = toHandlers;
  exports.toRaw = toRaw;
  exports.toRef = toRef;
  exports.toRefs = toRefs;
  exports.transformVNodeArgs = transformVNodeArgs;
  exports.triggerRef = triggerRef;
  exports.unref = unref;
  exports.useContext = useContext;
  exports.useCssModule = useCssModule;
  exports.useCssVars = useCssVars;
  exports.useSSRContext = useSSRContext;
  exports.useTransitionState = useTransitionState;
  exports.vModelCheckbox = vModelCheckbox;
  exports.vModelDynamic = vModelDynamic;
  exports.vModelRadio = vModelRadio;
  exports.vModelSelect = vModelSelect;
  exports.vModelText = vModelText;
  exports.vShow = vShow;
  exports.version = version;
  exports.warn = warn;
  exports.watch = watch;
  exports.watchEffect = watchEffect;
  exports.withCtx = withCtx;
  exports.withDirectives = withDirectives;
  exports.withKeys = withKeys;
  exports.withModifiers = withModifiers;
  exports.withScopeId = withScopeId;

  Object.defineProperty(exports, '__esModule', { value: true });

  return exports;

}({}));
